43964989607 has 16 divisors (see below), whose sum is σ = 54843934464. Its totient is φ = 34239408000.

The previous prime is 43964989589. The next prime is 43964989633. The reversal of 43964989607 is 70698946934.

It is a happy number.

It is not a de Polignac number, because 43964989607 - 2⁸ = 43964989351 is a prime.

It is a super-2 number, since 2×43964989607² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43964989687) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18194 + ... + 297087.

It is an arithmetic number, because the mean of its divisors is an integer number (3427745904).

Almost surely, 2^43964989607 is an apocalyptic number.

43964989607 is a deficient number, since it is larger than the sum of its proper divisors (10878944857).

43964989607 is a wasteful number, since it uses less digits than its factorization.

43964989607 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317110.

The product of its (nonzero) digits is 70543872, while the sum is 65.

The spelling of 43964989607 in words is "forty-three billion, nine hundred sixty-four million, nine hundred eighty-nine thousand, six hundred seven".