497758989 has 16 divisors (see below), whose sum is σ = 816835712. Its totient is φ = 262554048.

The previous prime is 497758913. The next prime is 497759021. The reversal of 497758989 is 989857794.

It is not a de Polignac number, because 497758989 - 2¹⁶ = 497693453 is a prime.

It is a super-2 number, since 2×497758989² = 495528022260604242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (497756989) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 911374 + ... + 911919.

It is an arithmetic number, because the mean of its divisors is an integer number (51052232).

Almost surely, 2^497758989 is an apocalyptic number.

It is an amenable number.

497758989 is a deficient number, since it is larger than the sum of its proper divisors (319076723).

497758989 is a wasteful number, since it uses less digits than its factorization.

497758989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1823316.

The product of its digits is 45722880, while the sum is 66.

The square root of 497758989 is about 22310.5129703465. The cubic root of 497758989 is about 792.5129555678.

The spelling of 497758989 in words is "four hundred ninety-seven million, seven hundred fifty-eight thousand, nine hundred eighty-nine".