43028449489 has 3 divisors (see below), whose sum is σ = 43028656923. Its totient is φ = 43028242056.

The previous prime is 43028449463. The next prime is 43028449493. The reversal of 43028449489 is 98494482034.

It is a happy number.

The square root of 43028449489 is 207433.

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., 17877027025 + 25151422464 = 133705^2 + 158592^2 .

It is not a de Polignac number, because 43028449489 - 2⁹ = 43028448977 is a prime.

It is a super-2 number, since 2×43028449489² (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 (43028449459) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 103717 + ... + 311149.

It is an arithmetic number, because the mean of its divisors is an integer number (14342885641).

Almost surely, 2^43028449489 is an apocalyptic number.

43028449489 is the 207433-rd square number.

43028449489 is the 103717-th centered octagonal number.

It is an amenable number.

43028449489 is a deficient number, since it is larger than the sum of its proper divisors (207434).

43028449489 is an frugal number, since it uses more digits than its factorization.

43028449489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 414866 (or 207433 counting only the distinct ones).

The product of its (nonzero) digits is 7962624, while the sum is 55.

The spelling of 43028449489 in words is "forty-three billion, twenty-eight million, four hundred forty-nine thousand, four hundred eighty-nine".