5618399 has 4 divisors (see below), whose sum is σ = 5638536. Its totient is φ = 5598264.

The previous prime is 5618387. The next prime is 5618429. The reversal of 5618399 is 9938165.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 5618399 - 2⁴ = 5618383 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5618309) 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, 9644 + ... + 10209.

It is an arithmetic number, because the mean of its divisors is an integer number (1409634).

Almost surely, 2^5618399 is an apocalyptic number.

5618399 is a deficient number, since it is larger than the sum of its proper divisors (20137).

5618399 is a wasteful number, since it uses less digits than its factorization.

5618399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20136.

The product of its digits is 58320, while the sum is 41.

The square root of 5618399 is about 2370.3162236292. The cubic root of 5618399 is about 177.7750704304.

The spelling of 5618399 in words is "five million, six hundred eighteen thousand, three hundred ninety-nine".