387266129 has 2 divisors, whose sum is σ = 387266130. Its totient is φ = 387266128.

The previous prime is 387266123. The next prime is 387266141. The reversal of 387266129 is 921662783.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 336172225 + 51093904 = 18335^2 + 7148^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-387266129 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 387266129.

It is not a weakly prime, because it can be changed into another prime (387266123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 193633064 + 193633065.

It is an arithmetic number, because the mean of its divisors is an integer number (193633065).

Almost surely, 2^387266129 is an apocalyptic number.

It is an amenable number.

387266129 is a deficient number, since it is larger than the sum of its proper divisors (1).

387266129 is an equidigital number, since it uses as much as digits as its factorization.

387266129 is an evil number, because the sum of its binary digits is even.

The product of its digits is 217728, while the sum is 44.

The square root of 387266129 is about 19679.0784591149. The cubic root of 387266129 is about 728.9031686145.

The spelling of 387266129 in words is "three hundred eighty-seven million, two hundred sixty-six thousand, one hundred twenty-nine".