749254945 has 8 divisors (see below), whose sum is σ = 899501544. Its totient is φ = 599140224.

The previous prime is 749254943. The next prime is 749254967. The reversal of 749254945 is 549452947.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 139806976 + 609447969 = 11824^2 + 24687^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 749254945 - 2¹ = 749254943 is a prime.

It is a super-2 number, since 2×749254945² = 1122765945213906050, which contains 22 as substring.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (749254943) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 20004 + ... + 43573.

It is an arithmetic number, because the mean of its divisors is an integer number (112437693).

Almost surely, 2^749254945 is an apocalyptic number.

It is an amenable number.

749254945 is a deficient number, since it is larger than the sum of its proper divisors (150246599).

749254945 is a wasteful number, since it uses less digits than its factorization.

749254945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65939.

The product of its digits is 1814400, while the sum is 49.

The square root of 749254945 is about 27372.5217143032. The cubic root of 749254945 is about 908.2593401182.

The spelling of 749254945 in words is "seven hundred forty-nine million, two hundred fifty-four thousand, nine hundred forty-five".