744139651 has 4 divisors (see below), whose sum is σ = 748879552. Its totient is φ = 739399752.

The previous prime is 744139633. The next prime is 744139661. The reversal of 744139651 is 156931447.

744139651 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 156931447 = 4253 ⋅36899.

It is a cyclic number.

It is not a de Polignac number, because 744139651 - 2¹⁷ = 744008579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (744139601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2369715 + ... + 2370028.

It is an arithmetic number, because the mean of its divisors is an integer number (187219888).

Almost surely, 2^744139651 is an apocalyptic number.

744139651 is a deficient number, since it is larger than the sum of its proper divisors (4739901).

744139651 is a wasteful number, since it uses less digits than its factorization.

744139651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4739900.

The product of its digits is 90720, while the sum is 40.

The square root of 744139651 is about 27278.9232008890. The cubic root of 744139651 is about 906.1876701579.

It can be divided in two parts, 7441396 and 51, that added together give a palindrome (7441447).

The spelling of 744139651 in words is "seven hundred forty-four million, one hundred thirty-nine thousand, six hundred fifty-one".