387452137 has 2 divisors, whose sum is σ = 387452138. Its totient is φ = 387452136.

The previous prime is 387452077. The next prime is 387452147. The reversal of 387452137 is 731254783.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 385572496 + 1879641 = 19636^2 + 1371^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-387452137 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 387452137.

It is not a weakly prime, because it can be changed into another prime (387452147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 193726068 + 193726069.

It is an arithmetic number, because the mean of its divisors is an integer number (193726069).

Almost surely, 2^387452137 is an apocalyptic number.

It is an amenable number.

387452137 is a deficient number, since it is larger than the sum of its proper divisors (1).

387452137 is an equidigital number, since it uses as much as digits as its factorization.

387452137 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 141120, while the sum is 40.

The square root of 387452137 is about 19683.8039260708. The cubic root of 387452137 is about 729.0198498913.

The spelling of 387452137 in words is "three hundred eighty-seven million, four hundred fifty-two thousand, one hundred thirty-seven".