43426939 has 8 divisors (see below), whose sum is σ = 44903808. Its totient is φ = 41954880.

The previous prime is 43426883. The next prime is 43426961. The reversal of 43426939 is 93962434.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 43426939 - 2¹¹ = 43424891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43426969) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33369 + ... + 34645.

It is an arithmetic number, because the mean of its divisors is an integer number (5612976).

Almost surely, 2^43426939 is an apocalyptic number.

43426939 is a deficient number, since it is larger than the sum of its proper divisors (1476869).

43426939 is a wasteful number, since it uses less digits than its factorization.

43426939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2405.

The product of its digits is 139968, while the sum is 40.

The square root of 43426939 is about 6589.9119113991. The cubic root of 43426939 is about 351.4954758774.

The spelling of 43426939 in words is "forty-three million, four hundred twenty-six thousand, nine hundred thirty-nine".