749861971 has 4 divisors (see below), whose sum is σ = 750331944. Its totient is φ = 749392000.

The previous prime is 749861963. The next prime is 749861977. The reversal of 749861971 is 179168947.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 749861971 - 2³ = 749861963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (749861977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 232585 + ... + 235786.

It is an arithmetic number, because the mean of its divisors is an integer number (187582986).

Almost surely, 2^749861971 is an apocalyptic number.

749861971 is a deficient number, since it is larger than the sum of its proper divisors (469973).

749861971 is a wasteful number, since it uses less digits than its factorization.

749861971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 469972.

The product of its digits is 762048, while the sum is 52.

The square root of 749861971 is about 27383.6077060712. The cubic root of 749861971 is about 908.5045562546.

The spelling of 749861971 in words is "seven hundred forty-nine million, eight hundred sixty-one thousand, nine hundred seventy-one".