381936339 has 6 divisors (see below), whose sum is σ = 551685836. Its totient is φ = 254624220.

The previous prime is 381936299. The next prime is 381936343. The reversal of 381936339 is 933639183.

381936339 is a `hidden beast` number, since 3 + 8 + 1 + 9 + 3 + 633 + 9 = 666.

It is not a de Polignac number, because 381936339 - 2⁸ = 381936083 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 381936294 and 381936303.

It is not an unprimeable number, because it can be changed into a prime (381936349) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 21218677 + ... + 21218694.

Almost surely, 2^381936339 is an apocalyptic number.

381936339 is a deficient number, since it is larger than the sum of its proper divisors (169749497).

381936339 is a wasteful number, since it uses less digits than its factorization.

381936339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42437377 (or 42437374 counting only the distinct ones).

The product of its digits is 314928, while the sum is 45.

The square root of 381936339 is about 19543.1916277767. The cubic root of 381936339 is about 725.5438418090.

The spelling of 381936339 in words is "three hundred eighty-one million, nine hundred thirty-six thousand, three hundred thirty-nine".