5618989 has 4 divisors (see below), whose sum is σ = 5650560. Its totient is φ = 5587420.

The previous prime is 5618981. The next prime is 5619001. The reversal of 5618989 is 9898165.

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 a cyclic number.

It is not a de Polignac number, because 5618989 - 2³ = 5618981 is a prime.

It is an Ulam number.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5618981) 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, 15517 + ... + 15874.

It is an arithmetic number, because the mean of its divisors is an integer number (1412640).

Almost surely, 2^5618989 is an apocalyptic number.

It is an amenable number.

5618989 is a deficient number, since it is larger than the sum of its proper divisors (31571).

5618989 is a wasteful number, since it uses less digits than its factorization.

5618989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31570.

The product of its digits is 155520, while the sum is 46.

The square root of 5618989 is about 2370.4406763300. The cubic root of 5618989 is about 177.7812930584.

The spelling of 5618989 in words is "five million, six hundred eighteen thousand, nine hundred eighty-nine".