399052525 has 12 divisors (see below), whose sum is σ = 497865952. Its totient is φ = 317280240.

The previous prime is 399052523. The next prime is 399052531. The reversal of 399052525 is 525250993.

It is not a de Polignac number, because 399052525 - 2¹ = 399052523 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (399052523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 44889 + ... + 53038.

Almost surely, 2^399052525 is an apocalyptic number.

It is an amenable number.

399052525 is a deficient number, since it is larger than the sum of its proper divisors (98813427).

399052525 is a wasteful number, since it uses less digits than its factorization.

399052525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98100 (or 98095 counting only the distinct ones).

The product of its (nonzero) digits is 121500, while the sum is 40.

The square root of 399052525 is about 19976.2990816617. The cubic root of 399052525 is about 736.2240851670.

The spelling of 399052525 in words is "three hundred ninety-nine million, fifty-two thousand, five hundred twenty-five".