387963641 has 16 divisors (see below), whose sum is σ = 441080640. Its totient is φ = 338281920.

The previous prime is 387963623. The next prime is 387963643. The reversal of 387963641 is 146369783.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 387963641 - 2⁶ = 387963577 is a prime.

It is not an unprimeable number, because it can be changed into a prime (387963643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 90026 + ... + 94236.

It is an arithmetic number, because the mean of its divisors is an integer number (27567540).

Almost surely, 2^387963641 is an apocalyptic number.

It is an amenable number.

387963641 is a deficient number, since it is larger than the sum of its proper divisors (53116999).

387963641 is a wasteful number, since it uses less digits than its factorization.

387963641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4616.

The product of its digits is 653184, while the sum is 47.

The square root of 387963641 is about 19696.7926576892. The cubic root of 387963641 is about 729.3405196876.

The spelling of 387963641 in words is "three hundred eighty-seven million, nine hundred sixty-three thousand, six hundred forty-one".