977406539 has 2 divisors, whose sum is σ = 977406540. Its totient is φ = 977406538.

The previous prime is 977406527. The next prime is 977406553. The reversal of 977406539 is 935604779.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 977406539 - 2¹² = 977402443 is a prime.

It is not a weakly prime, because it can be changed into another prime (977400539) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 488703269 + 488703270.

It is an arithmetic number, because the mean of its divisors is an integer number (488703270).

Almost surely, 2^977406539 is an apocalyptic number.

977406539 is a deficient number, since it is larger than the sum of its proper divisors (1).

977406539 is an equidigital number, since it uses as much as digits as its factorization.

977406539 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1428840, while the sum is 50.

The square root of 977406539 is about 31263.5017072624. The cubic root of 977406539 is about 992.4114052303.

The spelling of 977406539 in words is "nine hundred seventy-seven million, four hundred six thousand, five hundred thirty-nine".