379997771 has 2 divisors, whose sum is σ = 379997772. Its totient is φ = 379997770.

The previous prime is 379997749. The next prime is 379997809. The reversal of 379997771 is 177799973.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 379997771 - 2²⁶ = 312888907 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 379997771.

It is not a weakly prime, because it can be changed into another prime (379997171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 189998885 + 189998886.

It is an arithmetic number, because the mean of its divisors is an integer number (189998886).

Almost surely, 2^379997771 is an apocalyptic number.

379997771 is a deficient number, since it is larger than the sum of its proper divisors (1).

379997771 is an equidigital number, since it uses as much as digits as its factorization.

379997771 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5250987, while the sum is 59.

The square root of 379997771 is about 19493.5315168904. The cubic root of 379997771 is about 724.3142281137.

The spelling of 379997771 in words is "three hundred seventy-nine million, nine hundred ninety-seven thousand, seven hundred seventy-one".