387340957 has 2 divisors, whose sum is σ = 387340958. Its totient is φ = 387340956.

The previous prime is 387340951. The next prime is 387341021. The reversal of 387340957 is 759043783.

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., 378925156 + 8415801 = 19466^2 + 2901^2 .

It is a cyclic number.

It is not a de Polignac number, because 387340957 - 2⁷ = 387340829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (387340951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 193670478 + 193670479.

It is an arithmetic number, because the mean of its divisors is an integer number (193670479).

Almost surely, 2^387340957 is an apocalyptic number.

It is an amenable number.

387340957 is a deficient number, since it is larger than the sum of its proper divisors (1).

387340957 is an equidigital number, since it uses as much as digits as its factorization.

387340957 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 635040, while the sum is 46.

The square root of 387340957 is about 19680.9795741980. The cubic root of 387340957 is about 728.9501120897.

The spelling of 387340957 in words is "three hundred eighty-seven million, three hundred forty thousand, nine hundred fifty-seven".