749949947 has 16 divisors (see below), whose sum is σ = 798439680. Its totient is φ = 703248000.

The previous prime is 749949869. The next prime is 749949973.

749949947 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 749949947 - 2⁸ = 749949691 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 749949947.

It is not an unprimeable number, because it can be changed into a prime (749949997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 152822 + ... + 157652.

It is an arithmetic number, because the mean of its divisors is an integer number (49902480).

Almost surely, 2^749949947 is an apocalyptic number.

749949947 is a deficient number, since it is larger than the sum of its proper divisors (48489733).

749949947 is a wasteful number, since it uses less digits than its factorization.

749949947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5014.

The product of its digits is 20575296, while the sum is 62.

The square root of 749949947 is about 27385.2140214386. The cubic root of 749949947 is about 908.5400843360.

The spelling of 749949947 in words is "seven hundred forty-nine million, nine hundred forty-nine thousand, nine hundred forty-seven".