399263612 has 24 divisors (see below), whose sum is σ = 770802480. Its totient is φ = 179442560.

The previous prime is 399263611. The next prime is 399263629. The reversal of 399263612 is 216362993.

It is a super-2 number, since 2×399263612² = 318822863734573088, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 399263612.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (399263611) 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 7 ways as a sum of consecutive naturals, for example, 47063 + ... + 54894.

It is an arithmetic number, because the mean of its divisors is an integer number (32116770).

Almost surely, 2^399263612 is an apocalyptic number.

It is an amenable number.

399263612 is a deficient number, since it is larger than the sum of its proper divisors (371538868).

399263612 is a wasteful number, since it uses less digits than its factorization.

399263612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102061 (or 102059 counting only the distinct ones).

The product of its digits is 104976, while the sum is 41.

The square root of 399263612 is about 19981.5818192655. The cubic root of 399263612 is about 736.3538758836.

The spelling of 399263612 in words is "three hundred ninety-nine million, two hundred sixty-three thousand, six hundred twelve".