398996 has 12 divisors (see below), whose sum is σ = 752052. Its totient is φ = 184128.

The previous prime is 398989. The next prime is 399023. The reversal of 398996 is 699893.

It can be written as a sum of positive squares in 2 ways, for example, as 148996 + 250000 = 386^2 + 500^2 .

It is a congruent number.

It is an unprimeable number.

398996 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3785 + ... + 3888.

It is an arithmetic number, because the mean of its divisors is an integer number (62671).

2³⁹⁸⁹⁹⁶ is an apocalyptic number.

It is an amenable number.

398996 is a deficient number, since it is larger than the sum of its proper divisors (353056).

398996 is a wasteful number, since it uses less digits than its factorization.

398996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7690 (or 7688 counting only the distinct ones).

The product of its digits is 104976, while the sum is 44.

The square root of 398996 is about 631.6613016483. The cubic root of 398996 is about 73.6189321964.

The spelling of 398996 in words is "three hundred ninety-eight thousand, nine hundred ninety-six".