490878539 has 2 divisors, whose sum is σ = 490878540. Its totient is φ = 490878538.

The previous prime is 490878523. The next prime is 490878551. The reversal of 490878539 is 935878094.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 490878539 - 2⁴ = 490878523 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (490878559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 245439269 + 245439270.

It is an arithmetic number, because the mean of its divisors is an integer number (245439270).

Almost surely, 2^490878539 is an apocalyptic number.

490878539 is a deficient number, since it is larger than the sum of its proper divisors (1).

490878539 is an equidigital number, since it uses as much as digits as its factorization.

490878539 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2177280, while the sum is 53.

The square root of 490878539 is about 22155.7789075446. The cubic root of 490878539 is about 788.8444029453.

The spelling of 490878539 in words is "four hundred ninety million, eight hundred seventy-eight thousand, five hundred thirty-nine".