749404947 has 8 divisors (see below), whose sum is σ = 1015587280. Its totient is φ = 491412960.

The previous prime is 749404913. The next prime is 749404949.

749404947 is nontrivially palindromic in base 10.

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

It is not a de Polignac number, because 749404947 - 2¹⁸ = 749142803 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 749404896 and 749404905.

It is not an unprimeable number, because it can be changed into a prime (749404949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2047372 + ... + 2047737.

It is an arithmetic number, because the mean of its divisors is an integer number (126948410).

Almost surely, 2^749404947 is an apocalyptic number.

749404947 is a deficient number, since it is larger than the sum of its proper divisors (266182333).

749404947 is a wasteful number, since it uses less digits than its factorization.

749404947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4095173.

The product of its (nonzero) digits is 1016064, while the sum is 48.

The square root of 749404947 is about 27375.2615877913. The cubic root of 749404947 is about 908.3199477158.

The spelling of 749404947 in words is "seven hundred forty-nine million, four hundred four thousand, nine hundred forty-seven".