749208451 has 4 divisors (see below), whose sum is σ = 749417752. Its totient is φ = 748999152.

The previous prime is 749208443. The next prime is 749208469. The reversal of 749208451 is 154802947.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 154802947 = 13 ⋅11907919.

It is a cyclic number.

It is not a de Polignac number, because 749208451 - 2³ = 749208443 is a prime.

It is a super-2 number, since 2×749208451² = 1122626606099638802, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (749208431) 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, 99186 + ... + 106471.

It is an arithmetic number, because the mean of its divisors is an integer number (187354438).

Almost surely, 2^749208451 is an apocalyptic number.

749208451 is a deficient number, since it is larger than the sum of its proper divisors (209301).

749208451 is a wasteful number, since it uses less digits than its factorization.

749208451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209300.

The product of its (nonzero) digits is 80640, while the sum is 40.

The square root of 749208451 is about 27371.6724187617. The cubic root of 749208451 is about 908.2405527955.

The spelling of 749208451 in words is "seven hundred forty-nine million, two hundred eight thousand, four hundred fifty-one".