379326991 has 2 divisors, whose sum is σ = 379326992. Its totient is φ = 379326990.

The previous prime is 379326977. The next prime is 379327009. The reversal of 379326991 is 199623973.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 379326991 - 2¹¹ = 379324943 is a prime.

It is a super-2 number, since 2×379326991² = 287777932202228162, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (379326911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 189663495 + 189663496.

It is an arithmetic number, because the mean of its divisors is an integer number (189663496).

Almost surely, 2^379326991 is an apocalyptic number.

379326991 is a deficient number, since it is larger than the sum of its proper divisors (1).

379326991 is an equidigital number, since it uses as much as digits as its factorization.

379326991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 551124, while the sum is 49.

The square root of 379326991 is about 19476.3187230031. The cubic root of 379326991 is about 723.8877855602.

The spelling of 379326991 in words is "three hundred seventy-nine million, three hundred twenty-six thousand, nine hundred ninety-one".