5918391 has 24 divisors (see below), whose sum is σ = 8984976. Its totient is φ = 3749760.

The previous prime is 5918389. The next prime is 5918399. The reversal of 5918391 is 1938195.

It is a happy number.

It is not a de Polignac number, because 5918391 - 2¹ = 5918389 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5918399) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15681 + ... + 16053.

It is an arithmetic number, because the mean of its divisors is an integer number (374374).

Almost surely, 2^5918391 is an apocalyptic number.

5918391 is a deficient number, since it is larger than the sum of its proper divisors (3066585).

5918391 is a wasteful number, since it uses less digits than its factorization.

5918391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 463 (or 460 counting only the distinct ones).

The product of its digits is 9720, while the sum is 36.

The square root of 5918391 is about 2432.7743421863. The cubic root of 5918391 is about 180.8844434000.

The spelling of 5918391 in words is "five million, nine hundred eighteen thousand, three hundred ninety-one".