394000998 has 16 divisors (see below), whose sum is σ = 793292400. Its totient is φ = 130451936.

The previous prime is 394000987. The next prime is 394001009. The reversal of 394000998 is 899000493.

It is an interprime number because it is at equal distance from previous prime (394000987) and next prime (394001009).

It is a super-3 number, since 3×394000998³ (a number of 27 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 219465 + ... + 221252.

It is an arithmetic number, because the mean of its divisors is an integer number (49580775).

Almost surely, 2^394000998 is an apocalyptic number.

394000998 is an abundant number, since it is smaller than the sum of its proper divisors (399291402).

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

394000998 is a wasteful number, since it uses less digits than its factorization.

394000998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 440871.

The product of its (nonzero) digits is 69984, while the sum is 42.

The square root of 394000998 is about 19849.4583805201. The cubic root of 394000998 is about 733.1043120007.

The spelling of 394000998 in words is "three hundred ninety-four million, nine hundred ninety-eight", and thus it is an aban number.