381039999 has 8 divisors (see below), whose sum is σ = 509688192. Its totient is φ = 253209240.

The previous prime is 381039983. The next prime is 381040007. The reversal of 381039999 is 999930183.

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

It is not a de Polignac number, because 381039999 - 2⁴ = 381039983 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381039929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 203269 + ... + 205134.

It is an arithmetic number, because the mean of its divisors is an integer number (63711024).

Almost surely, 2^381039999 is an apocalyptic number.

381039999 is a deficient number, since it is larger than the sum of its proper divisors (128648193).

381039999 is a wasteful number, since it uses less digits than its factorization.

381039999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408717.

The product of its (nonzero) digits is 472392, while the sum is 51.

The square root of 381039999 is about 19520.2458744761. The cubic root of 381039999 is about 724.9758209931.

The spelling of 381039999 in words is "three hundred eighty-one million, thirty-nine thousand, nine hundred ninety-nine".