43994970 has 24 divisors (see below), whose sum is σ = 114387156. Its totient is φ = 11731968.

The previous prime is 43994957. The next prime is 43994987. The reversal of 43994970 is 7949934.

It can be written as a sum of positive squares in 2 ways, for example, as 43917129 + 77841 = 6627^2 + 279^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 244327 + ... + 244506.

Almost surely, 2^43994970 is an apocalyptic number.

43994970 is an abundant number, since it is smaller than the sum of its proper divisors (70392186).

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

43994970 is a wasteful number, since it uses less digits than its factorization.

43994970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 488846 (or 488843 counting only the distinct ones).

The product of its (nonzero) digits is 244944, while the sum is 45.

The square root of 43994970 is about 6632.8704193584. The cubic root of 43994970 is about 353.0213802532.

The spelling of 43994970 in words is "forty-three million, nine hundred ninety-four thousand, nine hundred seventy".