126408779 has 12 divisors (see below), whose sum is σ = 147255624. Its totient is φ = 108196704.

The previous prime is 126408757. The next prime is 126408797. The reversal of 126408779 is 977804621.

It is a de Polignac number, because none of the positive numbers 2^k-126408779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126408179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 45344 + ... + 48050.

It is an arithmetic number, because the mean of its divisors is an integer number (12271302).

Almost surely, 2^126408779 is an apocalyptic number.

126408779 is a deficient number, since it is larger than the sum of its proper divisors (20846845).

126408779 is an equidigital number, since it uses as much as digits as its factorization.

126408779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3674 (or 3667 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 44.

The square root of 126408779 is about 11243.1658797689. The cubic root of 126408779 is about 501.8713592908.

The spelling of 126408779 in words is "one hundred twenty-six million, four hundred eight thousand, seven hundred seventy-nine".