399853425 has 12 divisors (see below), whose sum is σ = 661091120. Its totient is φ = 213255120.

The previous prime is 399853411. The next prime is 399853429. The reversal of 399853425 is 524358993.

It is not a de Polignac number, because 399853425 - 2¹⁶ = 399787889 is a prime.

It is a super-3 number, since 3×399853425³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (399853429) 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, 2665615 + ... + 2665764.

Almost surely, 2^399853425 is an apocalyptic number.

It is an amenable number.

399853425 is a deficient number, since it is larger than the sum of its proper divisors (261237695).

399853425 is a wasteful number, since it uses less digits than its factorization.

399853425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5331392 (or 5331387 counting only the distinct ones).

The product of its digits is 1166400, while the sum is 48.

The square root of 399853425 is about 19996.3352892474. The cubic root of 399853425 is about 736.7162909135.

The spelling of 399853425 in words is "three hundred ninety-nine million, eight hundred fifty-three thousand, four hundred twenty-five".