387755149 has 2 divisors, whose sum is σ = 387755150. Its totient is φ = 387755148.

The previous prime is 387755141. The next prime is 387755171. The reversal of 387755149 is 941557783.

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., 387696100 + 59049 = 19690^2 + 243^2 .

It is a cyclic number.

It is not a de Polignac number, because 387755149 - 2³ = 387755141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (387755141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 193877574 + 193877575.

It is an arithmetic number, because the mean of its divisors is an integer number (193877575).

Almost surely, 2^387755149 is an apocalyptic number.

It is an amenable number.

387755149 is a deficient number, since it is larger than the sum of its proper divisors (1).

387755149 is an equidigital number, since it uses as much as digits as its factorization.

387755149 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1058400, while the sum is 49.

The square root of 387755149 is about 19691.4994096437. The cubic root of 387755149 is about 729.2098468658.

The spelling of 387755149 in words is "three hundred eighty-seven million, seven hundred fifty-five thousand, one hundred forty-nine".