44493813 has 72 divisors (see below), whose sum is σ = 83448000. Its totient is φ = 23351328.

The previous prime is 44493809. The next prime is 44493853. The reversal of 44493813 is 31839444.

It is not a de Polignac number, because 44493813 - 2² = 44493809 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44493853) 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 71 ways as a sum of consecutive naturals, for example, 223488 + ... + 223686.

It is an arithmetic number, because the mean of its divisors is an integer number (1159000).

Almost surely, 2^44493813 is an apocalyptic number.

It is an amenable number.

44493813 is a deficient number, since it is larger than the sum of its proper divisors (38954187).

44493813 is a wasteful number, since it uses less digits than its factorization.

44493813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248 (or 222 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 44493813 is about 6670.3682806874. The cubic root of 44493813 is about 354.3506293254.

The spelling of 44493813 in words is "forty-four million, four hundred ninety-three thousand, eight hundred thirteen".