379881 has 6 divisors (see below), whose sum is σ = 548730. Its totient is φ = 253248.

The previous prime is 379877. The next prime is 379889. The reversal of 379881 is 188973.

It can be written as a sum of positive squares in only one way, i.e., 360000 + 19881 = 600^2 + 141^2 .

It is not a de Polignac number, because 379881 - 2² = 379877 is a prime.

It is a super-2 number, since 2×379881² = 288619148322, which contains 22 as substring.

It is a Curzon number.

379881 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (379889) 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, 21096 + ... + 21113.

It is an arithmetic number, because the mean of its divisors is an integer number (91455).

2³⁷⁹⁸⁸¹ is an apocalyptic number.

It is an amenable number.

379881 is a deficient number, since it is larger than the sum of its proper divisors (168849).

379881 is a wasteful number, since it uses less digits than its factorization.

379881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42215 (or 42212 counting only the distinct ones).

The product of its digits is 12096, while the sum is 36.

The square root of 379881 is about 616.3448709935. The cubic root of 379881 is about 72.4240028063.

The spelling of 379881 in words is "three hundred seventy-nine thousand, eight hundred eighty-one".