379077870221 has 2 divisors, whose sum is σ = 379077870222. Its totient is φ = 379077870220.

The previous prime is 379077870209. The next prime is 379077870251. The reversal of 379077870221 is 122078770973.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 240683454025 + 138394416196 = 490595^2 + 372014^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-379077870221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (379077870251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 189538935110 + 189538935111.

It is an arithmetic number, because the mean of its divisors is an integer number (189538935111).

Almost surely, 2^379077870221 is an apocalyptic number.

It is an amenable number.

379077870221 is a deficient number, since it is larger than the sum of its proper divisors (1).

379077870221 is an equidigital number, since it uses as much as digits as its factorization.

379077870221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2074464, while the sum is 53.

The spelling of 379077870221 in words is "three hundred seventy-nine billion, seventy-seven million, eight hundred seventy thousand, two hundred twenty-one".