749549641 has 4 divisors (see below), whose sum is σ = 766981072. Its totient is φ = 732118212.

The previous prime is 749549623. The next prime is 749549653. The reversal of 749549641 is 146945947.

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, and also an emirpimes, since its reverse is a distinct semiprime: 146945947 = 2399 ⋅61253.

It is a cyclic number.

It is not a de Polignac number, because 749549641 - 2⁵ = 749549609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (749549611) 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, 8715651 + ... + 8715736.

It is an arithmetic number, because the mean of its divisors is an integer number (191745268).

Almost surely, 2^749549641 is an apocalyptic number.

It is an amenable number.

749549641 is a deficient number, since it is larger than the sum of its proper divisors (17431431).

749549641 is a wasteful number, since it uses less digits than its factorization.

749549641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17431430.

The product of its digits is 1088640, while the sum is 49.

The square root of 749549641 is about 27377.9042477689. The cubic root of 749549641 is about 908.3784029784.

The spelling of 749549641 in words is "seven hundred forty-nine million, five hundred forty-nine thousand, six hundred forty-one".