7315989 has 8 divisors (see below), whose sum is σ = 9804960. Its totient is φ = 4852176.

The previous prime is 7315981. The next prime is 7315991. The reversal of 7315989 is 9895137.

It is a happy number.

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

It is not a de Polignac number, because 7315989 - 2³ = 7315981 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 7315989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7315981) 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, 5599 + ... + 6780.

It is an arithmetic number, because the mean of its divisors is an integer number (1225620).

Almost surely, 2^7315989 is an apocalyptic number.

It is an amenable number.

7315989 is a deficient number, since it is larger than the sum of its proper divisors (2488971).

7315989 is a wasteful number, since it uses less digits than its factorization.

7315989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12579.

The product of its digits is 68040, while the sum is 42.

The square root of 7315989 is about 2704.8084959938. The cubic root of 7315989 is about 194.1292669488.

The spelling of 7315989 in words is "seven million, three hundred fifteen thousand, nine hundred eighty-nine".