398693000 has 32 divisors (see below), whose sum is σ = 932943960. Its totient is φ = 159476800.

The previous prime is 398692999. The next prime is 398693069. The reversal of 398693000 is 396893.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 37920964 + 360772036 = 6158^2 + 18994^2 .

It is a super-2 number, since 2×398693000² = 317912216498000000, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 198347 + ... + 200346.

Almost surely, 2^398693000 is an apocalyptic number.

It is an amenable number.

398693000 is an abundant number, since it is smaller than the sum of its proper divisors (534250960).

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

398693000 is a wasteful number, since it uses less digits than its factorization.

398693000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398714 (or 398700 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 38.

The square root of 398693000 is about 19967.2982649131. The cubic root of 398693000 is about 736.0029192149.

The spelling of 398693000 in words is "three hundred ninety-eight million, six hundred ninety-three thousand".