367989 has 4 divisors (see below), whose sum is σ = 490656. Its totient is φ = 245324.

The previous prime is 367957. The next prime is 368021. The reversal of 367989 is 989763.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (367957) and next prime (368021).

It is a cyclic number.

It is not a de Polignac number, because 367989 - 2⁵ = 367957 is a prime.

It is a D-number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 367989.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 367989.

It is not an unprimeable number, because it can be changed into a prime (367909) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61329 + ... + 61334.

It is an arithmetic number, because the mean of its divisors is an integer number (122664).

2³⁶⁷⁹⁸⁹ is an apocalyptic number.

It is an amenable number.

367989 is a deficient number, since it is larger than the sum of its proper divisors (122667).

367989 is a wasteful number, since it uses less digits than its factorization.

367989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122666.

The product of its digits is 81648, while the sum is 42.

The square root of 367989 is about 606.6209689749. The cubic root of 367989 is about 71.6602434000.

The spelling of 367989 in words is "three hundred sixty-seven thousand, nine hundred eighty-nine".