749107439 has 16 divisors (see below), whose sum is σ = 807174720. Its totient is φ = 693745920.

The previous prime is 749107409. The next prime is 749107487. The reversal of 749107439 is 934701947.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 749107439 - 2²⁴ = 732330223 is a prime.

It is a super-2 number, since 2×749107439² = 1122323910330277442, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 749107439.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (749107409) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71267 + ... + 81099.

It is an arithmetic number, because the mean of its divisors is an integer number (50448420).

Almost surely, 2^749107439 is an apocalyptic number.

749107439 is a deficient number, since it is larger than the sum of its proper divisors (58067281).

749107439 is a wasteful number, since it uses less digits than its factorization.

749107439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9970.

The product of its (nonzero) digits is 190512, while the sum is 44.

The square root of 749107439 is about 27369.8271642332. The cubic root of 749107439 is about 908.1997331287.

The spelling of 749107439 in words is "seven hundred forty-nine million, one hundred seven thousand, four hundred thirty-nine".