126938979 has 6 divisors (see below), whose sum is σ = 183356316. Its totient is φ = 84625980.

The previous prime is 126938969. The next prime is 126938989. The reversal of 126938979 is 979839621.

It is an interprime number because it is at equal distance from previous prime (126938969) and next prime (126938989).

It is not a de Polignac number, because 126938979 - 2⁵ = 126938947 is a prime.

It is a super-2 number, since 2×126938979² = 32227008779124882, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (126938969) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7052157 + ... + 7052174.

It is an arithmetic number, because the mean of its divisors is an integer number (30559386).

Almost surely, 2^126938979 is an apocalyptic number.

126938979 is a deficient number, since it is larger than the sum of its proper divisors (56417337).

126938979 is a wasteful number, since it uses less digits than its factorization.

126938979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14104337 (or 14104334 counting only the distinct ones).

The product of its digits is 1469664, while the sum is 54.

The square root of 126938979 is about 11266.7199752191. The cubic root of 126938979 is about 502.5720517459.

The spelling of 126938979 in words is "one hundred twenty-six million, nine hundred thirty-eight thousand, nine hundred seventy-nine".