44257993 has 8 divisors (see below), whose sum is σ = 47755008. Its totient is φ = 40774224.

The previous prime is 44257981. The next prime is 44257999. The reversal of 44257993 is 39975244.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 44257993 - 2¹³ = 44249801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (44257999) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4296 + ... + 10342.

It is an arithmetic number, because the mean of its divisors is an integer number (5969376).

Almost surely, 2^44257993 is an apocalyptic number.

It is an amenable number.

44257993 is a deficient number, since it is larger than the sum of its proper divisors (3497015).

44257993 is a wasteful number, since it uses less digits than its factorization.

44257993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6623.

The product of its digits is 272160, while the sum is 43.

The square root of 44257993 is about 6652.6681113670. The cubic root of 44257993 is about 353.7234932088.

The spelling of 44257993 in words is "forty-four million, two hundred fifty-seven thousand, nine hundred ninety-three".