916538879 has 4 divisors (see below), whose sum is σ = 917112960. Its totient is φ = 915964800.

The previous prime is 916538813. The next prime is 916538893. The reversal of 916538879 is 978835619.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-916538879 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (916538809) 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, 284639 + ... + 287840.

It is an arithmetic number, because the mean of its divisors is an integer number (229278240).

Almost surely, 2^916538879 is an apocalyptic number.

916538879 is a deficient number, since it is larger than the sum of its proper divisors (574081).

916538879 is a wasteful number, since it uses less digits than its factorization.

916538879 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 574080.

The product of its digits is 3265920, while the sum is 56.

The square root of 916538879 is about 30274.3931235624. The cubic root of 916538879 is about 971.3676385996.

The spelling of 916538879 in words is "nine hundred sixteen million, five hundred thirty-eight thousand, eight hundred seventy-nine".