381699 has 16 divisors (see below), whose sum is σ = 576640. Its totient is φ = 249480.

The previous prime is 381697. The next prime is 381707. The reversal of 381699 is 996183.

It is not a de Polignac number, because 381699 - 2¹ = 381697 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (381697) 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, 1704 + ... + 1914.

It is an arithmetic number, because the mean of its divisors is an integer number (36040).

2³⁸¹⁶⁹⁹ is an apocalyptic number.

381699 is a deficient number, since it is larger than the sum of its proper divisors (194941).

381699 is a wasteful number, since it uses less digits than its factorization.

381699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287 (or 281 counting only the distinct ones).

The product of its digits is 11664, while the sum is 36.

The square root of 381699 is about 617.8179343464. The cubic root of 381699 is about 72.5393523974.

The spelling of 381699 in words is "three hundred eighty-one thousand, six hundred ninety-nine".