749508913 has 2 divisors, whose sum is σ = 749508914. Its totient is φ = 749508912.

The previous prime is 749508911. The next prime is 749508931. The reversal of 749508913 is 319805947.

It is a happy number.

Together with next prime (749508931) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 623351089 + 126157824 = 24967^2 + 11232^2 .

It is an emirp because it is prime and its reverse (319805947) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 749508913 - 2¹ = 749508911 is a prime.

It is a super-2 number, since 2×749508913² = 1123527221332883138, which contains 22 as substring.

Together with 749508911, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (749508911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 374754456 + 374754457.

It is an arithmetic number, because the mean of its divisors is an integer number (374754457).

Almost surely, 2^749508913 is an apocalyptic number.

It is an amenable number.

749508913 is a deficient number, since it is larger than the sum of its proper divisors (1).

749508913 is an equidigital number, since it uses as much as digits as its factorization.

749508913 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 272160, while the sum is 46.

The square root of 749508913 is about 27377.1604261655. The cubic root of 749508913 is about 908.3619499406.

The spelling of 749508913 in words is "seven hundred forty-nine million, five hundred eight thousand, nine hundred thirteen".