126977759 has 4 divisors (see below), whose sum is σ = 127108704. Its totient is φ = 126846816.

The previous prime is 126977713. The next prime is 126977801. The reversal of 126977759 is 957779621.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 126977759 - 2²⁴ = 110200543 is a prime.

It is a super-2 number, since 2×126977759² = 32246702561324162, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 126977759.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126977159) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64007 + ... + 65960.

It is an arithmetic number, because the mean of its divisors is an integer number (31777176).

Almost surely, 2^126977759 is an apocalyptic number.

126977759 is a deficient number, since it is larger than the sum of its proper divisors (130945).

126977759 is an equidigital number, since it uses as much as digits as its factorization.

126977759 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130944.

The product of its digits is 1666980, while the sum is 53.

The square root of 126977759 is about 11268.4408415717. The cubic root of 126977759 is about 502.6232253096.

The spelling of 126977759 in words is "one hundred twenty-six million, nine hundred seventy-seven thousand, seven hundred fifty-nine".