859374491 has 2 divisors, whose sum is σ = 859374492. Its totient is φ = 859374490.

The previous prime is 859374443. The next prime is 859374493. The reversal of 859374491 is 194473958.

859374491 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-859374491 is a prime.

Together with 859374493, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (859374493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 429687245 + 429687246.

It is an arithmetic number, because the mean of its divisors is an integer number (429687246).

Almost surely, 2^859374491 is an apocalyptic number.

859374491 is a deficient number, since it is larger than the sum of its proper divisors (1).

859374491 is an equidigital number, since it uses as much as digits as its factorization.

859374491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1088640, while the sum is 50.

The square root of 859374491 is about 29315.0898173620. The cubic root of 859374491 is about 950.7379274858.

The spelling of 859374491 in words is "eight hundred fifty-nine million, three hundred seventy-four thousand, four hundred ninety-one".