497876989 has 2 divisors, whose sum is σ = 497876990. Its totient is φ = 497876988.

The previous prime is 497876941. The next prime is 497876993. The reversal of 497876989 is 989678794.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 329967225 + 167909764 = 18165^2 + 12958^2 .

It is a cyclic number.

It is not a de Polignac number, because 497876989 - 2⁷ = 497876861 is a prime.

It is a super-2 number, since 2×497876989² = 495762992351412242, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (497876999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 248938494 + 248938495.

It is an arithmetic number, because the mean of its divisors is an integer number (248938495).

Almost surely, 2^497876989 is an apocalyptic number.

It is an amenable number.

497876989 is a deficient number, since it is larger than the sum of its proper divisors (1).

497876989 is an equidigital number, since it uses as much as digits as its factorization.

497876989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54867456, while the sum is 67.

The square root of 497876989 is about 22313.1573068448. The cubic root of 497876989 is about 792.5755756591.

The spelling of 497876989 in words is "four hundred ninety-seven million, eight hundred seventy-six thousand, nine hundred eighty-nine".