749422857 has 8 divisors (see below), whose sum is σ = 999570400. Its totient is φ = 499445280.

The previous prime is 749422841. The next prime is 749422859. The reversal of 749422857 is 758224947.

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

It is not a de Polignac number, because 749422857 - 2⁴ = 749422841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (749422859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 31819 + ... + 50112.

It is an arithmetic number, because the mean of its divisors is an integer number (124946300).

Almost surely, 2^749422857 is an apocalyptic number.

It is an amenable number.

749422857 is a deficient number, since it is larger than the sum of its proper divisors (250147543).

749422857 is a wasteful number, since it uses less digits than its factorization.

749422857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84983.

The product of its digits is 1128960, while the sum is 48.

The square root of 749422857 is about 27375.5887059986. The cubic root of 749422857 is about 908.3271836260.

The spelling of 749422857 in words is "seven hundred forty-nine million, four hundred twenty-two thousand, eight hundred fifty-seven".