398385974 has 24 divisors (see below), whose sum is σ = 696197088. Its totient is φ = 170478000.

The previous prime is 398385941. The next prime is 398385979. The reversal of 398385974 is 479583893.

It is a super-2 number, since 2×398385974² = 317422768559857352, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398385979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 70892 + ... + 76304.

It is an arithmetic number, because the mean of its divisors is an integer number (29008212).

Almost surely, 2^398385974 is an apocalyptic number.

398385974 is a deficient number, since it is larger than the sum of its proper divisors (297811114).

398385974 is a wasteful number, since it uses less digits than its factorization.

398385974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6180 (or 6173 counting only the distinct ones).

The product of its digits is 6531840, while the sum is 56.

The square root of 398385974 is about 19959.6085632960. The cubic root of 398385974 is about 735.8139433507.

The spelling of 398385974 in words is "three hundred ninety-eight million, three hundred eighty-five thousand, nine hundred seventy-four".