126979394 has 16 divisors (see below), whose sum is σ = 201307680. Its totient is φ = 59904000.

The previous prime is 126979393. The next prime is 126979397. The reversal of 126979394 is 493979621.

It is a super-2 number, since 2×126979394² = 32247533001214472, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (126979393) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2882 + ... + 16194.

It is an arithmetic number, because the mean of its divisors is an integer number (12581730).

Almost surely, 2^126979394 is an apocalyptic number.

126979394 is a deficient number, since it is larger than the sum of its proper divisors (74328286).

126979394 is a wasteful number, since it uses less digits than its factorization.

126979394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13585.

The product of its digits is 734832, while the sum is 50.

The square root of 126979394 is about 11268.5133890855. The cubic root of 126979394 is about 502.6253826046.

The spelling of 126979394 in words is "one hundred twenty-six million, nine hundred seventy-nine thousand, three hundred ninety-four".