398716 has 6 divisors (see below), whose sum is σ = 697760. Its totient is φ = 199356.

The previous prime is 398711. The next prime is 398729. The reversal of 398716 is 617893.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (398711) by changing a digit.

398716 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 as a sum of consecutive naturals, namely, 49836 + ... + 49843.

2³⁹⁸⁷¹⁶ is an apocalyptic number.

It is an amenable number.

398716 is a deficient number, since it is larger than the sum of its proper divisors (299044).

398716 is a wasteful number, since it uses less digits than its factorization.

398716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99683 (or 99681 counting only the distinct ones).

The product of its digits is 9072, while the sum is 34.

The square root of 398716 is about 631.4396249841. The cubic root of 398716 is about 73.6017071910.

The spelling of 398716 in words is "three hundred ninety-eight thousand, seven hundred sixteen".