105589391 has 4 divisors (see below), whose sum is σ = 108164784. Its totient is φ = 103014000.

The previous prime is 105589373. The next prime is 105589411. The reversal of 105589391 is 193985501.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-105589391 is a prime.

It is a super-2 number, since 2×105589391² = 22298238983501762, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (41), and also a Moran number because the ratio is a prime number: 2575351 = 105589391 / (1 + 0 + 5 + 5 + 8 + 9 + 3 + 9 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105589301) 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, 1287635 + ... + 1287716.

It is an arithmetic number, because the mean of its divisors is an integer number (27041196).

Almost surely, 2^105589391 is an apocalyptic number.

105589391 is a deficient number, since it is larger than the sum of its proper divisors (2575393).

105589391 is an equidigital number, since it uses as much as digits as its factorization.

105589391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2575392.

The product of its (nonzero) digits is 48600, while the sum is 41.

The square root of 105589391 is about 10275.6698565106. The cubic root of 105589391 is about 472.6504710055.

The spelling of 105589391 in words is "one hundred five million, five hundred eighty-nine thousand, three hundred ninety-one".