389998497 has 12 divisors (see below), whose sum is σ = 604895856. Its totient is φ = 222856200.

The previous prime is 389998493. The next prime is 389998501. The reversal of 389998497 is 794899983.

It is an interprime number because it is at equal distance from previous prime (389998493) and next prime (389998501).

It is not a de Polignac number, because 389998497 - 2² = 389998493 is a prime.

It is not an unprimeable number, because it can be changed into a prime (389998493) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1326379 + ... + 1326672.

It is an arithmetic number, because the mean of its divisors is an integer number (50407988).

Almost surely, 2^389998497 is an apocalyptic number.

It is an amenable number.

389998497 is a deficient number, since it is larger than the sum of its proper divisors (214897359).

389998497 is a wasteful number, since it uses less digits than its factorization.

389998497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2653068 (or 2653061 counting only the distinct ones).

The product of its digits is 35271936, while the sum is 66.

The square root of 389998497 is about 19748.3796044131. The cubic root of 389998497 is about 730.6134188466.

The spelling of 389998497 in words is "three hundred eighty-nine million, nine hundred ninety-eight thousand, four hundred ninety-seven".