879958399 has 4 divisors (see below), whose sum is σ = 880297264. Its totient is φ = 879619536.

The previous prime is 879958361. The next prime is 879958411. The reversal of 879958399 is 993859978.

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

It is a cyclic number.

It is not a de Polignac number, because 879958399 - 2¹¹ = 879956351 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 (879958319) 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, 165507 + ... + 170740.

It is an arithmetic number, because the mean of its divisors is an integer number (220074316).

Almost surely, 2^879958399 is an apocalyptic number.

879958399 is a deficient number, since it is larger than the sum of its proper divisors (338865).

879958399 is a wasteful number, since it uses less digits than its factorization.

879958399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338864.

The product of its digits is 44089920, while the sum is 67.

The square root of 879958399 is about 29664.0927553836. The cubic root of 879958399 is about 958.2688705793.

The spelling of 879958399 in words is "eight hundred seventy-nine million, nine hundred fifty-eight thousand, three hundred ninety-nine".