105249959 has 4 divisors (see below), whose sum is σ = 105273816. Its totient is φ = 105226104.

The previous prime is 105249931. The next prime is 105249973. The reversal of 105249959 is 959942501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 959942501 = 7 ⋅137134643.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-105249959 is a prime.

It is a super-2 number, since 2×105249959² = 22155107739003362, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105249919) 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, 3164 + ... + 14849.

It is an arithmetic number, because the mean of its divisors is an integer number (26318454).

Almost surely, 2^105249959 is an apocalyptic number.

105249959 is a deficient number, since it is larger than the sum of its proper divisors (23857).

105249959 is an equidigital number, since it uses as much as digits as its factorization.

105249959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23856.

The product of its (nonzero) digits is 145800, while the sum is 44.

The square root of 105249959 is about 10259.1402661237. The cubic root of 105249959 is about 472.1434601148.

The spelling of 105249959 in words is "one hundred five million, two hundred forty-nine thousand, nine hundred fifty-nine".