398764 has 12 divisors (see below), whose sum is σ = 704088. Its totient is φ = 197600.

The previous prime is 398759. The next prime is 398771. The reversal of 398764 is 467893.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 144 + ... + 904.

It is an arithmetic number, because the mean of its divisors is an integer number (58674).

2³⁹⁸⁷⁶⁴ is an apocalyptic number.

It is an amenable number.

398764 is a deficient number, since it is larger than the sum of its proper divisors (305324).

398764 is a wasteful number, since it uses less digits than its factorization.

398764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 896 (or 894 counting only the distinct ones).

The product of its digits is 36288, while the sum is 37.

The square root of 398764 is about 631.4776322246. The cubic root of 398764 is about 73.6046606217.

The spelling of 398764 in words is "three hundred ninety-eight thousand, seven hundred sixty-four".