44642857 has 4 divisors (see below), whose sum is σ = 51020416. Its totient is φ = 38265300.

The previous prime is 44642827. The next prime is 44642869. The reversal of 44642857 is 75824644.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-44642857 is a prime.

It is a super-2 number, since 2×44642857² = 3985969362244898, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (44642827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3188769 + ... + 3188782.

It is an arithmetic number, because the mean of its divisors is an integer number (12755104).

Almost surely, 2^44642857 is an apocalyptic number.

It is an amenable number.

44642857 is a deficient number, since it is larger than the sum of its proper divisors (6377559).

44642857 is an equidigital number, since it uses as much as digits as its factorization.

44642857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6377558.

The product of its digits is 215040, while the sum is 40.

The square root of 44642857 is about 6681.5310371202. The cubic root of 44642857 is about 354.7458526142.

The spelling of 44642857 in words is "forty-four million, six hundred forty-two thousand, eight hundred fifty-seven".