43974972 has 18 divisors (see below), whose sum is σ = 111159048. Its totient is φ = 14658312.

The previous prime is 43974943. The next prime is 43975003. The reversal of 43974972 is 27947934.

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 610728 + ... + 610799.

Almost surely, 2^43974972 is an apocalyptic number.

It is an amenable number.

43974972 is an abundant number, since it is smaller than the sum of its proper divisors (67184076).

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

43974972 is a wasteful number, since it uses less digits than its factorization.

43974972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1221537 (or 1221532 counting only the distinct ones).

The product of its digits is 381024, while the sum is 45.

The square root of 43974972 is about 6631.3627558745. The cubic root of 43974972 is about 352.9678832928.

The spelling of 43974972 in words is "forty-three million, nine hundred seventy-four thousand, nine hundred seventy-two".