43773426841 has 3 divisors (see below), whose sum is σ = 43773636063. Its totient is φ = 43773217620.

The previous prime is 43773426799. The next prime is 43773426857. The reversal of 43773426841 is 14862437734.

The square root of 43773426841 is 209221.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 9021010441 + 34752416400 = 94979^2 + 186420^2 .

It is not a de Polignac number, because 43773426841 - 2¹⁹ = 43772902553 is a prime.

It is a super-2 number, since 2×43773426841² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43773426041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 104611 + ... + 313831.

It is an arithmetic number, because the mean of its divisors is an integer number (14591212021).

Almost surely, 2^43773426841 is an apocalyptic number.

43773426841 is the 209221-st square number.

43773426841 is the 104611-st centered octagonal number.

It is an amenable number.

43773426841 is a deficient number, since it is larger than the sum of its proper divisors (209222).

43773426841 is an frugal number, since it uses more digits than its factorization.

43773426841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418442 (or 209221 counting only the distinct ones).

The product of its digits is 2709504, while the sum is 49.

Multiplying 43773426841 by its sum of digits (49), we get a square (2144897915209 = 1464547²).

The spelling of 43773426841 in words is "forty-three billion, seven hundred seventy-three million, four hundred twenty-six thousand, eight hundred forty-one".