398457074 has 16 divisors (see below), whose sum is σ = 628611840. Its totient is φ = 189162480.

The previous prime is 398457061. The next prime is 398457077. The reversal of 398457074 is 470754893.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (398457077) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57344 + ... + 63915.

It is an arithmetic number, because the mean of its divisors is an integer number (39288240).

Almost surely, 2^398457074 is an apocalyptic number.

398457074 is a deficient number, since it is larger than the sum of its proper divisors (230154766).

398457074 is a wasteful number, since it uses less digits than its factorization.

398457074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121345.

The product of its (nonzero) digits is 846720, while the sum is 47.

The square root of 398457074 is about 19961.3895808884. The cubic root of 398457074 is about 735.8577143524.

The spelling of 398457074 in words is "three hundred ninety-eight million, four hundred fifty-seven thousand, seventy-four".