744444405 has 16 divisors (see below), whose sum is σ = 1323456960. Its totient is φ = 397036944.

The previous prime is 744444397. The next prime is 744444439. The reversal of 744444405 is 504444447.

It is not a de Polignac number, because 744444405 - 2³ = 744444397 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 744444405.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2757067 + ... + 2757336.

It is an arithmetic number, because the mean of its divisors is an integer number (82716060).

Almost surely, 2^744444405 is an apocalyptic number.

It is an amenable number.

744444405 is a deficient number, since it is larger than the sum of its proper divisors (579012555).

744444405 is a wasteful number, since it uses less digits than its factorization.

744444405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5514417 (or 5514411 counting only the distinct ones).

The product of its (nonzero) digits is 143360, while the sum is 36.

The square root of 744444405 is about 27284.5085167389. The cubic root of 744444405 is about 906.3113595870.

The spelling of 744444405 in words is "seven hundred forty-four million, four hundred forty-four thousand, four hundred five".