858993379 has 4 divisors (see below), whose sum is σ = 868645080. Its totient is φ = 849341680.

The previous prime is 858993367. The next prime is 858993383. The reversal of 858993379 is 973399858.

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 858993379 - 2⁹ = 858992867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (858993349) 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, 4825717 + ... + 4825894.

It is an arithmetic number, because the mean of its divisors is an integer number (217161270).

Almost surely, 2^858993379 is an apocalyptic number.

858993379 is a gapful number since it is divisible by the number (89) formed by its first and last digit.

858993379 is a deficient number, since it is larger than the sum of its proper divisors (9651701).

858993379 is an equidigital number, since it uses as much as digits as its factorization.

858993379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9651700.

The product of its digits is 14696640, while the sum is 61.

The square root of 858993379 is about 29308.5888264857. The cubic root of 858993379 is about 950.5973635397.

The spelling of 858993379 in words is "eight hundred fifty-eight million, nine hundred ninety-three thousand, three hundred seventy-nine".