126979443 has 24 divisors (see below), whose sum is σ = 194639328. Its totient is φ = 79494912.

The previous prime is 126979427. The next prime is 126979469. The reversal of 126979443 is 344979621.

It is a happy number.

It is not a de Polignac number, because 126979443 - 2⁴ = 126979427 is a prime.

It is a super-2 number, since 2×126979443² = 32247557889180498, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (126979423) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 113121 + ... + 114237.

It is an arithmetic number, because the mean of its divisors is an integer number (8109972).

Almost surely, 2^126979443 is an apocalyptic number.

126979443 is a deficient number, since it is larger than the sum of its proper divisors (67659885).

126979443 is a wasteful number, since it uses less digits than its factorization.

126979443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1883 (or 1880 counting only the distinct ones).

The product of its digits is 326592, while the sum is 45.

The square root of 126979443 is about 11268.5155632852. The cubic root of 126979443 is about 502.6254472572.

The spelling of 126979443 in words is "one hundred twenty-six million, nine hundred seventy-nine thousand, four hundred forty-three".