126979837 has 2 divisors, whose sum is σ = 126979838. Its totient is φ = 126979836.

The previous prime is 126979823. The next prime is 126979843. The reversal of 126979837 is 738979621.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 118135161 + 8844676 = 10869^2 + 2974^2 .

It is a cyclic number.

It is not a de Polignac number, because 126979837 - 2⁷ = 126979709 is a prime.

It is a super-2 number, since 2×126979837² = 32247758009093138, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (126979037) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 63489918 + 63489919.

It is an arithmetic number, because the mean of its divisors is an integer number (63489919).

Almost surely, 2^126979837 is an apocalyptic number.

It is an amenable number.

126979837 is a deficient number, since it is larger than the sum of its proper divisors (1).

126979837 is an equidigital number, since it uses as much as digits as its factorization.

126979837 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1143072, while the sum is 52.

The square root of 126979837 is about 11268.5330456098. The cubic root of 126979837 is about 502.6259671162.

The spelling of 126979837 in words is "one hundred twenty-six million, nine hundred seventy-nine thousand, eight hundred thirty-seven".