744768139 has 2 divisors, whose sum is σ = 744768140. Its totient is φ = 744768138.

The previous prime is 744768133. The next prime is 744768173. The reversal of 744768139 is 931867447.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 744768139 - 2⁵ = 744768107 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 744768092 and 744768101.

It is not a weakly prime, because it can be changed into another prime (744768133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 372384069 + 372384070.

It is an arithmetic number, because the mean of its divisors is an integer number (372384070).

Almost surely, 2^744768139 is an apocalyptic number.

744768139 is a deficient number, since it is larger than the sum of its proper divisors (1).

744768139 is an equidigital number, since it uses as much as digits as its factorization.

744768139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1016064, while the sum is 49.

The square root of 744768139 is about 27290.4404325031. The cubic root of 744768139 is about 906.4427153916.

The spelling of 744768139 in words is "seven hundred forty-four million, seven hundred sixty-eight thousand, one hundred thirty-nine".