398497 has 8 divisors (see below), whose sum is σ = 460512. Its totient is φ = 340800.

The previous prime is 398491. The next prime is 398509. The reversal of 398497 is 794893.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 398497 - 2⁷ = 398369 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (398491) 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 7 ways as a sum of consecutive naturals, for example, 879 + ... + 1252.

It is an arithmetic number, because the mean of its divisors is an integer number (57564).

2³⁹⁸⁴⁹⁷ is an apocalyptic number.

It is an amenable number.

398497 is a deficient number, since it is larger than the sum of its proper divisors (62015).

398497 is a wasteful number, since it uses less digits than its factorization.

398497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2159.

The product of its digits is 54432, while the sum is 40.

The square root of 398497 is about 631.2661879112. The cubic root of 398497 is about 73.5882291549.

Adding to 398497 its product of digits (54432), we get a square (452929 = 673²).

The spelling of 398497 in words is "three hundred ninety-eight thousand, four hundred ninety-seven".