105071899 has 4 divisors (see below), whose sum is σ = 105231520. Its totient is φ = 104912280.

The previous prime is 105071873. The next prime is 105071921. The reversal of 105071899 is 998170501.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 105071899 - 2⁵ = 105071867 is a prime.

It is a super-2 number, since 2×105071899² = 22080207918932402, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (105071299) 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, 78819 + ... + 80140.

It is an arithmetic number, because the mean of its divisors is an integer number (26307880).

Almost surely, 2^105071899 is an apocalyptic number.

105071899 is a deficient number, since it is larger than the sum of its proper divisors (159621).

105071899 is an equidigital number, since it uses as much as digits as its factorization.

105071899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159620.

The product of its (nonzero) digits is 22680, while the sum is 40.

The square root of 105071899 is about 10250.4584775511. The cubic root of 105071899 is about 471.8770552021.

The spelling of 105071899 in words is "one hundred five million, seventy-one thousand, eight hundred ninety-nine".