104390906 has 8 divisors (see below), whose sum is σ = 156854880. Its totient is φ = 52105948.

The previous prime is 104390903. The next prime is 104390911. The reversal of 104390906 is 609093401.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×104390906² = 21794922511001672, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (104390903) 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, 43286 + ... + 45633.

It is an arithmetic number, because the mean of its divisors is an integer number (19606860).

Almost surely, 2^104390906 is an apocalyptic number.

104390906 is a deficient number, since it is larger than the sum of its proper divisors (52463974).

104390906 is an equidigital number, since it uses as much as digits as its factorization.

104390906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89508.

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 104390906 is about 10217.1867948081. The cubic root of 104390906 is about 470.8554001266.

The spelling of 104390906 in words is "one hundred four million, three hundred ninety thousand, nine hundred six".