104999689 has 4 divisors (see below), whose sum is σ = 105162624. Its totient is φ = 104836756.

The previous prime is 104999659. The next prime is 104999711. The reversal of 104999689 is 986999401.

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 104999689 - 2⁷ = 104999561 is a prime.

It is a super-2 number, since 2×104999689² = 22049869380193442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (104999659) 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, 80497 + ... + 81790.

It is an arithmetic number, because the mean of its divisors is an integer number (26290656).

Almost surely, 2^104999689 is an apocalyptic number.

It is an amenable number.

104999689 is a deficient number, since it is larger than the sum of its proper divisors (162935).

104999689 is an equidigital number, since it uses as much as digits as its factorization.

104999689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162934.

The product of its (nonzero) digits is 1259712, while the sum is 55.

The square root of 104999689 is about 10246.9355907022. The cubic root of 104999689 is about 471.7689322525.

The spelling of 104999689 in words is "one hundred four million, nine hundred ninety-nine thousand, six hundred eighty-nine".