387801899 has 2 divisors, whose sum is σ = 387801900. Its totient is φ = 387801898.

The previous prime is 387801893. The next prime is 387801941. The reversal of 387801899 is 998108783.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-387801899 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 387801899.

It is not a weakly prime, because it can be changed into another prime (387801893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 193900949 + 193900950.

It is an arithmetic number, because the mean of its divisors is an integer number (193900950).

Almost surely, 2^387801899 is an apocalyptic number.

387801899 is a deficient number, since it is larger than the sum of its proper divisors (1).

387801899 is an equidigital number, since it uses as much as digits as its factorization.

387801899 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 870912, while the sum is 53.

The square root of 387801899 is about 19692.6864343086. The cubic root of 387801899 is about 729.2391516049.

The spelling of 387801899 in words is "three hundred eighty-seven million, eight hundred one thousand, eight hundred ninety-nine".