749742986 has 4 divisors (see below), whose sum is σ = 1124614482. Its totient is φ = 374871492.

The previous prime is 749742977. The next prime is 749743019. The reversal of 749742986 is 689247947.

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., 651831961 + 97911025 = 25531^2 + 9895^2 .

It is a super-2 number, since 2×749742986² = 1124229090112392392, which contains 22 as substring.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 187435745 + ... + 187435748.

Almost surely, 2^749742986 is an apocalyptic number.

749742986 is a deficient number, since it is larger than the sum of its proper divisors (374871496).

749742986 is a wasteful number, since it uses less digits than its factorization.

749742986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374871495.

The product of its digits is 6096384, while the sum is 56.

The square root of 749742986 is about 27381.4350610044. The cubic root of 749742986 is about 908.4565011294.

The spelling of 749742986 in words is "seven hundred forty-nine million, seven hundred forty-two thousand, nine hundred eighty-six".