381207899 has 8 divisors (see below), whose sum is σ = 396607488. Its totient is φ = 366002280.

The previous prime is 381207889. The next prime is 381207907. The reversal of 381207899 is 998702183.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 381207899 - 2²⁰ = 380159323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (381207829) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44477 + ... + 52350.

It is an arithmetic number, because the mean of its divisors is an integer number (49575936).

Almost surely, 2^381207899 is an apocalyptic number.

381207899 is a deficient number, since it is larger than the sum of its proper divisors (15399589).

381207899 is a wasteful number, since it uses less digits than its factorization.

381207899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96985.

The product of its (nonzero) digits is 217728, while the sum is 47.

The square root of 381207899 is about 19524.5460638654. The cubic root of 381207899 is about 725.0822888761.

The spelling of 381207899 in words is "three hundred eighty-one million, two hundred seven thousand, eight hundred ninety-nine".