744495981 has 32 divisors (see below), whose sum is σ = 1078640640. Its totient is φ = 455160384.

The previous prime is 744495923. The next prime is 744496007. The reversal of 744495981 is 189594447.

It is not a de Polignac number, because 744495981 - 2⁹ = 744495469 is a prime.

It is a super-2 number, since 2×744495981² = 1108548531450304722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (744495881) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 469516 + ... + 471098.

It is an arithmetic number, because the mean of its divisors is an integer number (33707520).

Almost surely, 2^744495981 is an apocalyptic number.

It is an amenable number.

744495981 is a deficient number, since it is larger than the sum of its proper divisors (334144659).

744495981 is a wasteful number, since it uses less digits than its factorization.

744495981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1865.

The product of its digits is 1451520, while the sum is 51.

The square root of 744495981 is about 27285.4536520836. The cubic root of 744495981 is about 906.3322892158.

The spelling of 744495981 in words is "seven hundred forty-four million, four hundred ninety-five thousand, nine hundred eighty-one".