391037052 has 36 divisors (see below), whose sum is σ = 1061387880. Its totient is φ = 111724704.

The previous prime is 391037051. The next prime is 391037063. The reversal of 391037052 is 250730193.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (391037051) 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, 331927 + ... + 333102.

Almost surely, 2^391037052 is an apocalyptic number.

It is an amenable number.

391037052 is an abundant number, since it is smaller than the sum of its proper divisors (670350828).

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

391037052 is a wasteful number, since it uses less digits than its factorization.

391037052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 665050 (or 665041 counting only the distinct ones).

The product of its (nonzero) digits is 5670, while the sum is 30.

The square root of 391037052 is about 19774.6568111813. The cubic root of 391037052 is about 731.2613783312.

The spelling of 391037052 in words is "three hundred ninety-one million, thirty-seven thousand, fifty-two".