399928662 has 24 divisors (see below), whose sum is σ = 990299856. Its totient is φ = 114265296.

The previous prime is 399928649. The next prime is 399928673. The reversal of 399928662 is 266829993.

It is a super-2 number, since 2×399928662² = 319885869378220488, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 399928599 and 399928608.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1586893 + ... + 1587144.

It is an arithmetic number, because the mean of its divisors is an integer number (41262494).

Almost surely, 2^399928662 is an apocalyptic number.

399928662 is an abundant number, since it is smaller than the sum of its proper divisors (590371194).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

399928662 is a wasteful number, since it uses less digits than its factorization.

399928662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3174052 (or 3174049 counting only the distinct ones).

The product of its digits is 2519424, while the sum is 54.

The square root of 399928662 is about 19998.2164704756. The cubic root of 399928662 is about 736.7624952174.

The spelling of 399928662 in words is "three hundred ninety-nine million, nine hundred twenty-eight thousand, six hundred sixty-two".