749030985 has 12 divisors (see below), whose sum is σ = 1298320452. Its totient is φ = 399483168.

The previous prime is 749030983. The next prime is 749031001. The reversal of 749030985 is 589030947.

It can be written as a sum of positive squares in 2 ways, for example, as 463454784 + 285576201 = 21528^2 + 16899^2 .

It is not a de Polignac number, because 749030985 - 2¹ = 749030983 is a prime.

It is a super-2 number, since 2×749030985² = 1122094832980140450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 16645133 = 749030985 / (7 + 4 + 9 + 0 + 3 + 0 + 9 + 8 + 5).

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

It is a self number, because there is not a number n which added to its sum of digits gives 749030985.

It is not an unprimeable number, because it can be changed into a prime (749030983) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8322522 + ... + 8322611.

It is an arithmetic number, because the mean of its divisors is an integer number (108193371).

Almost surely, 2^749030985 is an apocalyptic number.

It is an amenable number.

749030985 is a deficient number, since it is larger than the sum of its proper divisors (549289467).

749030985 is a wasteful number, since it uses less digits than its factorization.

749030985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16645144 (or 16645141 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The square root of 749030985 is about 27368.4304445834. The cubic root of 749030985 is about 908.1688350843.

The spelling of 749030985 in words is "seven hundred forty-nine million, thirty thousand, nine hundred eighty-five".