398918074 has 8 divisors (see below), whose sum is σ = 599077908. Its totient is φ = 199225440.

The previous prime is 398918059. The next prime is 398918081. The reversal of 398918074 is 470819893.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 393824025 + 5094049 = 19845^2 + 2257^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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, 114657 + ... + 118084.

Almost surely, 2^398918074 is an apocalyptic number.

398918074 is a deficient number, since it is larger than the sum of its proper divisors (200159834).

398918074 is a wasteful number, since it uses less digits than its factorization.

398918074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 233600.

The product of its (nonzero) digits is 435456, while the sum is 49.

The square root of 398918074 is about 19972.9335351620. The cubic root of 398918074 is about 736.1413916389.

The spelling of 398918074 in words is "three hundred ninety-eight million, nine hundred eighteen thousand, seventy-four".