43979604169 has 4 divisors (see below), whose sum is σ = 45891760896. Its totient is φ = 42067447444.

The previous prime is 43979604131. The next prime is 43979604203. The reversal of 43979604169 is 96140697934.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43979604169 is a prime.

It is a super-2 number, since 2×43979604169² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (43979604269) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 956078329 + ... + 956078374.

It is an arithmetic number, because the mean of its divisors is an integer number (11472940224).

Almost surely, 2^43979604169 is an apocalyptic number.

It is an amenable number.

43979604169 is a deficient number, since it is larger than the sum of its proper divisors (1912156727).

43979604169 is a wasteful number, since it uses less digits than its factorization.

43979604169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1912156726.

The product of its (nonzero) digits is 8817984, while the sum is 58.

The spelling of 43979604169 in words is "forty-three billion, nine hundred seventy-nine million, six hundred four thousand, one hundred sixty-nine".