744870381 has 16 divisors (see below), whose sum is σ = 1029135360. Its totient is φ = 478885680.

The previous prime is 744870377. The next prime is 744870383. The reversal of 744870381 is 183078447.

It is not a de Polignac number, because 744870381 - 2² = 744870377 is a prime.

It is a super-2 number, since 2×744870381² = 1109663768982170322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (744870383) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26355 + ... + 46736.

It is an arithmetic number, because the mean of its divisors is an integer number (64320960).

Almost surely, 2^744870381 is an apocalyptic number.

It is an amenable number.

744870381 is a deficient number, since it is larger than the sum of its proper divisors (284264979).

744870381 is a wasteful number, since it uses less digits than its factorization.

744870381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73216.

The product of its (nonzero) digits is 150528, while the sum is 42.

The square root of 744870381 is about 27292.3135882614. The cubic root of 744870381 is about 906.4841924056.

The spelling of 744870381 in words is "seven hundred forty-four million, eight hundred seventy thousand, three hundred eighty-one".