749636929 has 4 divisors (see below), whose sum is σ = 763781076. Its totient is φ = 735492784.

The previous prime is 749636917. The next prime is 749636969. The reversal of 749636929 is 929636947.

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

It can be written as a sum of positive squares in 2 ways, for example, as 224310529 + 525326400 = 14977^2 + 22920^2 .

It is a cyclic number.

It is not a de Polignac number, because 749636929 - 2¹⁷ = 749505857 is a prime.

It is an alternating number because its digits alternate between odd and even.

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 749636929.

It is not an unprimeable number, because it can be changed into a prime (749636969) 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, 7071994 + ... + 7072099.

It is an arithmetic number, because the mean of its divisors is an integer number (190945269).

Almost surely, 2^749636929 is an apocalyptic number.

It is an amenable number.

749636929 is a deficient number, since it is larger than the sum of its proper divisors (14144147).

749636929 is a wasteful number, since it uses less digits than its factorization.

749636929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14144146.

The product of its digits is 4408992, while the sum is 55.

The square root of 749636929 is about 27379.4983336072. The cubic root of 749636929 is about 908.4136630208.

The spelling of 749636929 in words is "seven hundred forty-nine million, six hundred thirty-six thousand, nine hundred twenty-nine".