749957 has 4 divisors (see below), whose sum is σ = 807660. Its totient is φ = 692256.

The previous prime is 749941. The next prime is 749971. The reversal of 749957 is 759947.

It is a happy number.

749957 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Cunningham number, because it is equal to 866²+1.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 111556 + 638401 = 334^2 + 799^2 .

It is a cyclic number.

It is not a de Polignac number, because 749957 - 2⁴ = 749941 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 15.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 749957.

It is not an unprimeable number, because it can be changed into a prime (749927) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28832 + ... + 28857.

It is an arithmetic number, because the mean of its divisors is an integer number (201915).

2⁷⁴⁹⁹⁵⁷ is an apocalyptic number.

It is an amenable number.

749957 is a deficient number, since it is larger than the sum of its proper divisors (57703).

749957 is a wasteful number, since it uses less digits than its factorization.

749957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57702.

The product of its digits is 79380, while the sum is 41.

The square root of 749957 is about 866.0005773670. Note that the first 3 decimals coincide. The cubic root of 749957 is about 90.8542932487.

The spelling of 749957 in words is "seven hundred forty-nine thousand, nine hundred fifty-seven".