291798379 has 2 divisors, whose sum is σ = 291798380. Its totient is φ = 291798378.

The previous prime is 291798373. The next prime is 291798383. The reversal of 291798379 is 973897192.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 291798379 - 2²⁷ = 157580651 is a prime.

It is not a weakly prime, because it can be changed into another prime (291798373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 145899189 + 145899190.

It is an arithmetic number, because the mean of its divisors is an integer number (145899190).

Almost surely, 2^291798379 is an apocalyptic number.

291798379 is a deficient number, since it is larger than the sum of its proper divisors (1).

291798379 is an equidigital number, since it uses as much as digits as its factorization.

291798379 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1714608, while the sum is 55.

The square root of 291798379 is about 17082.1069836247. The cubic root of 291798379 is about 663.2760131329.

The spelling of 291798379 in words is "two hundred ninety-one million, seven hundred ninety-eight thousand, three hundred seventy-nine".