399925748 has 48 divisors (see below), whose sum is σ = 794271744. Its totient is φ = 175127040.

The previous prime is 399925741. The next prime is 399925759. The reversal of 399925748 is 847529993.

It is a junction number, because it is equal to n+sod(n) for n = 399925693 and 399925702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (399925741) 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 15 ways as a sum of consecutive naturals, for example, 54413 + ... + 61323.

It is an arithmetic number, because the mean of its divisors is an integer number (16547328).

Almost surely, 2^399925748 is an apocalyptic number.

It is an amenable number.

399925748 is a deficient number, since it is larger than the sum of its proper divisors (394345996).

399925748 is a wasteful number, since it uses less digits than its factorization.

399925748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6992 (or 6990 counting only the distinct ones).

The product of its digits is 4898880, while the sum is 56.

The square root of 399925748 is about 19998.1436138458. The cubic root of 399925748 is about 736.7607057890.

The spelling of 399925748 in words is "three hundred ninety-nine million, nine hundred twenty-five thousand, seven hundred forty-eight".