749807986 has 4 divisors (see below), whose sum is σ = 1124711982. Its totient is φ = 374903992.

The previous prime is 749807939. The next prime is 749808023. The reversal of 749807986 is 689708947.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 735223225 + 14584761 = 27115^2 + 3819^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 749807986.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 187451995 + ... + 187451998.

Almost surely, 2^749807986 is an apocalyptic number.

749807986 is a deficient number, since it is larger than the sum of its proper divisors (374903996).

749807986 is a wasteful number, since it uses less digits than its factorization.

749807986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374903995.

The product of its (nonzero) digits is 6096384, while the sum is 58.

The square root of 749807986 is about 27382.6219708778. The cubic root of 749807986 is about 908.4827536663.

The spelling of 749807986 in words is "seven hundred forty-nine million, eight hundred seven thousand, nine hundred eighty-six".