381279 has 8 divisors (see below), whose sum is σ = 515632. Its totient is φ = 250560.

The previous prime is 381253. The next prime is 381287. The reversal of 381279 is 972183.

It is a happy number.

381279 is nontrivially palindromic in base 7.

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

It is not a de Polignac number, because 381279 - 2¹² = 377183 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381209) 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, 652 + ... + 1089.

It is an arithmetic number, because the mean of its divisors is an integer number (64454).

2³⁸¹²⁷⁹ is an apocalyptic number.

381279 is a deficient number, since it is larger than the sum of its proper divisors (134353).

381279 is a wasteful number, since it uses less digits than its factorization.

381279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1817.

The product of its digits is 3024, while the sum is 30.

The square root of 381279 is about 617.4779348284. The cubic root of 381279 is about 72.5127365654.

The spelling of 381279 in words is "three hundred eighty-one thousand, two hundred seventy-nine".