57444989 has 8 divisors (see below), whose sum is σ = 69513408. Its totient is φ = 46342080.

The previous prime is 57444971. The next prime is 57444991. The reversal of 57444989 is 98944475.

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 57444989 - 2²⁰ = 56396413 is a prime.

It is a super-2 number, since 2×57444989² = 6599853522420242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57444089) 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, 241247 + ... + 241484.

It is an arithmetic number, because the mean of its divisors is an integer number (8689176).

Almost surely, 2^57444989 is an apocalyptic number.

It is an amenable number.

57444989 is a deficient number, since it is larger than the sum of its proper divisors (12068419).

57444989 is a wasteful number, since it uses less digits than its factorization.

57444989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 482755.

The product of its digits is 1451520, while the sum is 50.

The square root of 57444989 is about 7579.2472581385. The cubic root of 57444989 is about 385.8490040030.

The spelling of 57444989 in words is "fifty-seven million, four hundred forty-four thousand, nine hundred eighty-nine".