105870089 has 4 divisors (see below), whose sum is σ = 114013956. Its totient is φ = 97726224.

The previous prime is 105870041. The next prime is 105870091. The reversal of 105870089 is 980078501.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 980078501 = 19 ⋅51583079.

It can be written as a sum of positive squares in 2 ways, for example, as 46348864 + 59521225 = 6808^2 + 7715^2 .

It is a cyclic number.

It is not a de Polignac number, because 105870089 - 2⁸ = 105869833 is a prime.

It is a super-2 number, since 2×105870089² = 22416951489735842, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (105870029) 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, 4071914 + ... + 4071939.

It is an arithmetic number, because the mean of its divisors is an integer number (28503489).

Almost surely, 2^105870089 is an apocalyptic number.

It is an amenable number.

105870089 is a deficient number, since it is larger than the sum of its proper divisors (8143867).

105870089 is an equidigital number, since it uses as much as digits as its factorization.

105870089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8143866.

The product of its (nonzero) digits is 20160, while the sum is 38.

The square root of 105870089 is about 10289.3191708684. The cubic root of 105870089 is about 473.0689305028.

The spelling of 105870089 in words is "one hundred five million, eight hundred seventy thousand, eighty-nine".