43898643 has 12 divisors (see below), whose sum is σ = 63561888. Its totient is φ = 29195280.

The previous prime is 43898639. The next prime is 43898653. The reversal of 43898643 is 34689834.

It is not a de Polignac number, because 43898643 - 2² = 43898639 is a prime.

It is not an unprimeable number, because it can be changed into a prime (43898653) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1780 + ... + 9537.

It is an arithmetic number, because the mean of its divisors is an integer number (5296824).

Almost surely, 2^43898643 is an apocalyptic number.

43898643 is a deficient number, since it is larger than the sum of its proper divisors (19663245).

43898643 is a wasteful number, since it uses less digits than its factorization.

43898643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11754 (or 11751 counting only the distinct ones).

The product of its digits is 497664, while the sum is 45.

The square root of 43898643 is about 6625.6051044414. The cubic root of 43898643 is about 352.7635451789.

The spelling of 43898643 in words is "forty-three million, eight hundred ninety-eight thousand, six hundred forty-three".