43990574 has 4 divisors (see below), whose sum is σ = 65985864. Its totient is φ = 21995286.

The previous prime is 43990553. The next prime is 43990601. The reversal of 43990574 is 47509934.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10997642 + ... + 10997645.

It is an arithmetic number, because the mean of its divisors is an integer number (16496466).

Almost surely, 2^43990574 is an apocalyptic number.

43990574 is a deficient number, since it is larger than the sum of its proper divisors (21995290).

43990574 is a wasteful number, since it uses less digits than its factorization.

43990574 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21995289.

The product of its (nonzero) digits is 136080, while the sum is 41.

The square root of 43990574 is about 6632.5390311705. The cubic root of 43990574 is about 353.0096218357.

The spelling of 43990574 in words is "forty-three million, nine hundred ninety thousand, five hundred seventy-four".