749021253 has 8 divisors (see below), whose sum is σ = 1008391488. Its totient is φ = 494499264.

The previous prime is 749021239. The next prime is 749021261. The reversal of 749021253 is 352120947.

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

It is not a de Polignac number, because 749021253 - 2⁴ = 749021237 is a prime.

It is a super-2 number, since 2×749021253² = 1122065674891380018, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (749021213) 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, 1211700 + ... + 1212317.

It is an arithmetic number, because the mean of its divisors is an integer number (126048936).

Almost surely, 2^749021253 is an apocalyptic number.

It is an amenable number.

749021253 is a deficient number, since it is larger than the sum of its proper divisors (259370235).

749021253 is a wasteful number, since it uses less digits than its factorization.

749021253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2424123.

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 749021253 is about 27368.2526479131. The cubic root of 749021253 is about 908.1649018525.

The spelling of 749021253 in words is "seven hundred forty-nine million, twenty-one thousand, two hundred fifty-three".