105727489 has 4 divisors (see below), whose sum is σ = 120831424. Its totient is φ = 90623556.

The previous prime is 105727441. The next prime is 105727499. The reversal of 105727489 is 984727501.

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 105727489 - 2²¹ = 103630337 is a prime.

It is a super-2 number, since 2×105727489² = 22356603860490242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (105727409) 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, 7551957 + ... + 7551970.

It is an arithmetic number, because the mean of its divisors is an integer number (30207856).

Almost surely, 2^105727489 is an apocalyptic number.

It is an amenable number.

105727489 is a deficient number, since it is larger than the sum of its proper divisors (15103935).

105727489 is an equidigital number, since it uses as much as digits as its factorization.

105727489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15103934.

The product of its (nonzero) digits is 141120, while the sum is 43.

The square root of 105727489 is about 10282.3873200731. The cubic root of 105727489 is about 472.8564375608.

The spelling of 105727489 in words is "one hundred five million, seven hundred twenty-seven thousand, four hundred eighty-nine".