817054379 has 2 divisors, whose sum is σ = 817054380. Its totient is φ = 817054378.

The previous prime is 817054349. The next prime is 817054393. The reversal of 817054379 is 973450718.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 817054379 - 2²⁸ = 548618923 is a prime.

It is not a weakly prime, because it can be changed into another prime (817054319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 408527189 + 408527190.

It is an arithmetic number, because the mean of its divisors is an integer number (408527190).

Almost surely, 2^817054379 is an apocalyptic number.

817054379 is a deficient number, since it is larger than the sum of its proper divisors (1).

817054379 is an equidigital number, since it uses as much as digits as its factorization.

817054379 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 211680, while the sum is 44.

The square root of 817054379 is about 28584.1630802793. The cubic root of 817054379 is about 934.8680565338.

The spelling of 817054379 in words is "eight hundred seventeen million, fifty-four thousand, three hundred seventy-nine".