104390647 has 4 divisors (see below), whose sum is σ = 106160040. Its totient is φ = 102621256.

The previous prime is 104390641. The next prime is 104390669. The reversal of 104390647 is 746093401.

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 104390647 - 2³ = 104390639 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (104390641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 884608 + ... + 884725.

It is an arithmetic number, because the mean of its divisors is an integer number (26540010).

Almost surely, 2^104390647 is an apocalyptic number.

104390647 is a deficient number, since it is larger than the sum of its proper divisors (1769393).

104390647 is an equidigital number, since it uses as much as digits as its factorization.

104390647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1769392.

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 104390647 is about 10217.1741200784. The cubic root of 104390647 is about 470.8550107196.

The spelling of 104390647 in words is "one hundred four million, three hundred ninety thousand, six hundred forty-seven".