368391 has 16 divisors (see below), whose sum is σ = 541440. Its totient is φ = 221760.

The previous prime is 368369. The next prime is 368399. The reversal of 368391 is 193863.

368391 = 66² + 67² + ... + 111².

It is not a de Polignac number, because 368391 - 2⁵ = 368359 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (368399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1171 + ... + 1451.

It is an arithmetic number, because the mean of its divisors is an integer number (33840).

2³⁶⁸³⁹¹ is an apocalyptic number.

368391 is a deficient number, since it is larger than the sum of its proper divisors (173049).

368391 is a wasteful number, since it uses less digits than its factorization.

368391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326.

The product of its digits is 3888, while the sum is 30.

The square root of 368391 is about 606.9522221724. The cubic root of 368391 is about 71.6863283593.

The spelling of 368391 in words is "three hundred sixty-eight thousand, three hundred ninety-one".