380522921 has 2 divisors, whose sum is σ = 380522922. Its totient is φ = 380522920.

The previous prime is 380522903. The next prime is 380522957. The reversal of 380522921 is 129225083.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 302377321 + 78145600 = 17389^2 + 8840^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-380522921 is a prime.

It is not a weakly prime, because it can be changed into another prime (380522981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190261460 + 190261461.

It is an arithmetic number, because the mean of its divisors is an integer number (190261461).

Almost surely, 2^380522921 is an apocalyptic number.

It is an amenable number.

380522921 is a deficient number, since it is larger than the sum of its proper divisors (1).

380522921 is an equidigital number, since it uses as much as digits as its factorization.

380522921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 380522921 is about 19506.9967191262. The cubic root of 380522921 is about 724.6477375509.

The spelling of 380522921 in words is "three hundred eighty million, five hundred twenty-two thousand, nine hundred twenty-one".