105494991 has 12 divisors (see below), whose sum is σ = 163625112. Its totient is φ = 60282768.

The previous prime is 105494981. The next prime is 105494999. The reversal of 105494991 is 199494501.

It is a happy number.

It is not a de Polignac number, because 105494991 - 2⁵ = 105494959 is a prime.

It is a super-2 number, since 2×105494991² = 22258386252180162, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (105494999) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 358680 + ... + 358973.

It is an arithmetic number, because the mean of its divisors is an integer number (13635426).

Almost surely, 2^105494991 is an apocalyptic number.

105494991 is a deficient number, since it is larger than the sum of its proper divisors (58130121).

105494991 is an equidigital number, since it uses as much as digits as its factorization.

105494991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 717670 (or 717663 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 42.

The square root of 105494991 is about 10271.0754548879. The cubic root of 105494991 is about 472.5095745659.

The spelling of 105494991 in words is "one hundred five million, four hundred ninety-four thousand, nine hundred ninety-one".