862408879 has 4 divisors (see below), whose sum is σ = 907798840. Its totient is φ = 817018920.

The previous prime is 862408853. The next prime is 862408901. The reversal of 862408879 is 978804268.

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 862408879 - 2⁵ = 862408847 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 (862408819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22694952 + ... + 22694989.

It is an arithmetic number, because the mean of its divisors is an integer number (226949710).

Almost surely, 2^862408879 is an apocalyptic number.

862408879 is a deficient number, since it is larger than the sum of its proper divisors (45389961).

862408879 is a wasteful number, since it uses less digits than its factorization.

862408879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45389960.

The product of its (nonzero) digits is 1548288, while the sum is 52.

The square root of 862408879 is about 29366.7989232739. The cubic root of 862408879 is about 951.8556082206.

The spelling of 862408879 in words is "eight hundred sixty-two million, four hundred eight thousand, eight hundred seventy-nine".