368921 has 6 divisors (see below), whose sum is σ = 429210. Its totient is φ = 316176.

The previous prime is 368911. The next prime is 368939. The reversal of 368921 is 129863.

It can be written as a sum of positive squares in only one way, i.e., 290521 + 78400 = 539^2 + 280^2 .

It is not a de Polignac number, because 368921 - 2⁶ = 368857 is a prime.

It is a super-2 number, since 2×368921² = 272205408482, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 368921.

It is not an unprimeable number, because it can be changed into a prime (368911) 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, 3716 + ... + 3813.

It is an arithmetic number, because the mean of its divisors is an integer number (71535).

2³⁶⁸⁹²¹ is an apocalyptic number.

It is an amenable number.

368921 is a deficient number, since it is larger than the sum of its proper divisors (60289).

368921 is an equidigital number, since it uses as much as digits as its factorization.

368921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7543 (or 7536 counting only the distinct ones).

The product of its digits is 2592, while the sum is 29.

The square root of 368921 is about 607.3886729270. The cubic root of 368921 is about 71.7206899916.

The spelling of 368921 in words is "three hundred sixty-eight thousand, nine hundred twenty-one".