43859450964 has 108 divisors (see below), whose sum is σ = 125643095424. Its totient is φ = 11871673632.

The previous prime is 43859450963. The next prime is 43859450993. The reversal of 43859450964 is 46905495834.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43859450963) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 108957 + ... + 315579.

Almost surely, 2^43859450964 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 43859450964, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62821547712).

43859450964 is an abundant number, since it is smaller than the sum of its proper divisors (81783644460).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

43859450964 is a wasteful number, since it uses less digits than its factorization.

43859450964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206682 (or 206654 counting only the distinct ones).

The product of its (nonzero) digits is 18662400, while the sum is 57.

The spelling of 43859450964 in words is "forty-three billion, eight hundred fifty-nine million, four hundred fifty thousand, nine hundred sixty-four".