749102245 has 4 divisors (see below), whose sum is σ = 898922700. Its totient is φ = 599281792.

The previous prime is 749102243. The next prime is 749102251. The reversal of 749102245 is 542201947.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 542201947 = 7 ⋅77457421.

It can be written as a sum of positive squares in 2 ways, for example, as 218537089 + 530565156 = 14783^2 + 23034^2 .

It is a cyclic number.

It is not a de Polignac number, because 749102245 - 2¹ = 749102243 is a prime.

It is a super-2 number, since 2×749102245² = 1122308346928080050, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 749102245.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (749102243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74910220 + ... + 74910229.

It is an arithmetic number, because the mean of its divisors is an integer number (224730675).

Almost surely, 2^749102245 is an apocalyptic number.

It is an amenable number.

749102245 is a deficient number, since it is larger than the sum of its proper divisors (149820455).

749102245 is a wasteful number, since it uses less digits than its factorization.

749102245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149820454.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 749102245 is about 27369.7322785591. The cubic root of 749102245 is about 908.1976340972.

The spelling of 749102245 in words is "seven hundred forty-nine million, one hundred two thousand, two hundred forty-five".