398612 has 12 divisors (see below), whose sum is σ = 702240. Its totient is φ = 197976.

The previous prime is 398611. The next prime is 398621. The reversal of 398612 is 216893.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 689 + ... + 1127.

It is an arithmetic number, because the mean of its divisors is an integer number (58520).

2³⁹⁸⁶¹² is an apocalyptic number.

It is an amenable number.

398612 is a deficient number, since it is larger than the sum of its proper divisors (303628).

398612 is a wasteful number, since it uses less digits than its factorization.

398612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 670 (or 668 counting only the distinct ones).

The product of its digits is 2592, while the sum is 29.

The square root of 398612 is about 631.3572681137. The cubic root of 398612 is about 73.5953072780.

The spelling of 398612 in words is "three hundred ninety-eight thousand, six hundred twelve".