490715997397 has 2 divisors, whose sum is σ = 490715997398. Its totient is φ = 490715997396.

The previous prime is 490715997389. The next prime is 490715997433. The reversal of 490715997397 is 793799517094.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 251804243601 + 238911753796 = 501801^2 + 488786^2 .

It is a cyclic number.

It is not a de Polignac number, because 490715997397 - 2³ = 490715997389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (490715997797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 245357998698 + 245357998699.

It is an arithmetic number, because the mean of its divisors is an integer number (245357998699).

Almost surely, 2^490715997397 is an apocalyptic number.

It is an amenable number.

490715997397 is a deficient number, since it is larger than the sum of its proper divisors (1).

490715997397 is an equidigital number, since it uses as much as digits as its factorization.

490715997397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 135025380, while the sum is 70.

The spelling of 490715997397 in words is "four hundred ninety billion, seven hundred fifteen million, nine hundred ninety-seven thousand, three hundred ninety-seven".