399533325 has 12 divisors (see below), whose sum is σ = 660561888. Its totient is φ = 213084400.

The previous prime is 399533317. The next prime is 399533327. The reversal of 399533325 is 523335993.

It is not a de Polignac number, because 399533325 - 2³ = 399533317 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (399533327) 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, 2663481 + ... + 2663630.

It is an arithmetic number, because the mean of its divisors is an integer number (55046824).

Almost surely, 2^399533325 is an apocalyptic number.

It is an amenable number.

399533325 is a deficient number, since it is larger than the sum of its proper divisors (261028563).

399533325 is a wasteful number, since it uses less digits than its factorization.

399533325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5327124 (or 5327119 counting only the distinct ones).

The product of its digits is 328050, while the sum is 42.

The square root of 399533325 is about 19988.3297201142. The cubic root of 399533325 is about 736.5196473213.

The spelling of 399533325 in words is "three hundred ninety-nine million, five hundred thirty-three thousand, three hundred twenty-five".