745234879 has 4 divisors (see below), whose sum is σ = 745313184. Its totient is φ = 745156576.

The previous prime is 745234877. The next prime is 745234907. The reversal of 745234879 is 978432547.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 978432547 = 4001 ⋅244547.

It is a cyclic number.

It is not a de Polignac number, because 745234879 - 2¹ = 745234877 is a prime.

It is a super-3 number, since 3×745234879³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (745234873) 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, 22522 + ... + 44695.

It is an arithmetic number, because the mean of its divisors is an integer number (186328296).

Almost surely, 2^745234879 is an apocalyptic number.

745234879 is a deficient number, since it is larger than the sum of its proper divisors (78305).

745234879 is a wasteful number, since it uses less digits than its factorization.

745234879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78304.

The product of its digits is 1693440, while the sum is 49.

The square root of 745234879 is about 27298.9904392086. The cubic root of 745234879 is about 906.6320292209.

The spelling of 745234879 in words is "seven hundred forty-five million, two hundred thirty-four thousand, eight hundred seventy-nine".