104988643 has 4 divisors (see below), whose sum is σ = 105300520. Its totient is φ = 104676768.

The previous prime is 104988641. The next prime is 104988677. The reversal of 104988643 is 346889401.

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 104988643 - 2¹ = 104988641 is a prime.

It is a super-2 number, since 2×104988643² = 22045230317962898, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 104988643.

It is not an unprimeable number, because it can be changed into a prime (104988641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 155433 + ... + 156106.

It is an arithmetic number, because the mean of its divisors is an integer number (26325130).

Almost surely, 2^104988643 is an apocalyptic number.

104988643 is a deficient number, since it is larger than the sum of its proper divisors (311877).

104988643 is an equidigital number, since it uses as much as digits as its factorization.

104988643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311876.

The product of its (nonzero) digits is 165888, while the sum is 43.

The square root of 104988643 is about 10246.3965861175. The cubic root of 104988643 is about 471.7523882595.

The spelling of 104988643 in words is "one hundred four million, nine hundred eighty-eight thousand, six hundred forty-three".