749340945 has 24 divisors (see below), whose sum is σ = 1299580776. Its totient is φ = 399426048.

The previous prime is 749340937. The next prime is 749340971. The reversal of 749340945 is 549043947.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 103367889 + 645973056 = 10167^2 + 25416^2 .

It is not a de Polignac number, because 749340945 - 2³ = 749340937 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 749340945.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 106249 + ... + 113081.

It is an arithmetic number, because the mean of its divisors is an integer number (54149199).

Almost surely, 2^749340945 is an apocalyptic number.

It is an amenable number.

749340945 is a deficient number, since it is larger than the sum of its proper divisors (550239831).

749340945 is a wasteful number, since it uses less digits than its factorization.

749340945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9281 (or 9278 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 45.

The square root of 749340945 is about 27374.0925877005. The cubic root of 749340945 is about 908.2940890002.

The spelling of 749340945 in words is "seven hundred forty-nine million, three hundred forty thousand, nine hundred forty-five".