497665389 has 32 divisors (see below), whose sum is σ = 740202624. Its totient is φ = 295476480.

The previous prime is 497665381. The next prime is 497665391. The reversal of 497665389 is 983566794.

It is a happy number.

It is not a de Polignac number, because 497665389 - 2³ = 497665381 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (497665381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 124114 + ... + 128060.

It is an arithmetic number, because the mean of its divisors is an integer number (23131332).

Almost surely, 2^497665389 is an apocalyptic number.

It is an amenable number.

497665389 is a deficient number, since it is larger than the sum of its proper divisors (242537235).

497665389 is a wasteful number, since it uses less digits than its factorization.

497665389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4077.

The product of its digits is 9797760, while the sum is 57.

The square root of 497665389 is about 22308.4152059262. The cubic root of 497665389 is about 792.4632769988.

It can be divided in two parts, 49766 and 5389, that added together give a palindrome (55155).

The spelling of 497665389 in words is "four hundred ninety-seven million, six hundred sixty-five thousand, three hundred eighty-nine".