858472379 has 2 divisors, whose sum is σ = 858472380. Its totient is φ = 858472378.

The previous prime is 858472319. The next prime is 858472451. The reversal of 858472379 is 973274858.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 858472379 - 2²⁰ = 857423803 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 858472379.

It is not a weakly prime, because it can be changed into another prime (858472319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 429236189 + 429236190.

It is an arithmetic number, because the mean of its divisors is an integer number (429236190).

Almost surely, 2^858472379 is an apocalyptic number.

858472379 is a deficient number, since it is larger than the sum of its proper divisors (1).

858472379 is an equidigital number, since it uses as much as digits as its factorization.

858472379 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3386880, while the sum is 53.

The square root of 858472379 is about 29299.6992987983. The cubic root of 858472379 is about 950.4051380032.

The spelling of 858472379 in words is "eight hundred fifty-eight million, four hundred seventy-two thousand, three hundred seventy-nine".