399675375 has 48 divisors (see below), whose sum is σ = 786004128. Its totient is φ = 193776000.

The previous prime is 399675307. The next prime is 399675377. The reversal of 399675375 is 573576993.

It is not a de Polignac number, because 399675375 - 2¹⁴ = 399658991 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (399675377) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3774 + ... + 28523.

It is an arithmetic number, because the mean of its divisors is an integer number (16375086).

Almost surely, 2^399675375 is an apocalyptic number.

399675375 is a deficient number, since it is larger than the sum of its proper divisors (386328753).

399675375 is a wasteful number, since it uses less digits than its factorization.

399675375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32329 (or 32316 counting only the distinct ones).

The product of its digits is 5358150, while the sum is 54.

The square root of 399675375 is about 19991.8827277473. The cubic root of 399675375 is about 736.6069243289.

The spelling of 399675375 in words is "three hundred ninety-nine million, six hundred seventy-five thousand, three hundred seventy-five".