380906957 has 2 divisors, whose sum is σ = 380906958. Its totient is φ = 380906956.

The previous prime is 380906899. The next prime is 380906983. The reversal of 380906957 is 759609083.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 372721636 + 8185321 = 19306^2 + 2861^2 .

It is a cyclic number.

It is not a de Polignac number, because 380906957 - 2⁶ = 380906893 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (380900957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190453478 + 190453479.

It is an arithmetic number, because the mean of its divisors is an integer number (190453479).

Almost surely, 2^380906957 is an apocalyptic number.

It is an amenable number.

380906957 is a deficient number, since it is larger than the sum of its proper divisors (1).

380906957 is an equidigital number, since it uses as much as digits as its factorization.

380906957 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 408240, while the sum is 47.

The square root of 380906957 is about 19516.8377817719. The cubic root of 380906957 is about 724.8914348733.

The spelling of 380906957 in words is "three hundred eighty million, nine hundred six thousand, nine hundred fifty-seven".