399607375 has 8 divisors (see below), whose sum is σ = 498710160. Its totient is φ = 319685800.

The previous prime is 399607357. The next prime is 399607379. The reversal of 399607375 is 573706993.

It is not a de Polignac number, because 399607375 - 2¹³ = 399599183 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (399607379) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1598305 + ... + 1598554.

It is an arithmetic number, because the mean of its divisors is an integer number (62338770).

Almost surely, 2^399607375 is an apocalyptic number.

399607375 is a deficient number, since it is larger than the sum of its proper divisors (99102785).

399607375 is an equidigital number, since it uses as much as digits as its factorization.

399607375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3196874 (or 3196864 counting only the distinct ones).

The product of its (nonzero) digits is 1071630, while the sum is 49.

The square root of 399607375 is about 19990.1819651548. The cubic root of 399607375 is about 736.5651469975.

The spelling of 399607375 in words is "three hundred ninety-nine million, six hundred seven thousand, three hundred seventy-five".