104428999 has 4 divisors (see below), whose sum is σ = 104529600. Its totient is φ = 104328400.

The previous prime is 104428991. The next prime is 104429053. The reversal of 104428999 is 999824401.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 999824401 = 41 ⋅24385961.

It is a cyclic number.

It is not a de Polignac number, because 104428999 - 2³ = 104428991 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 (104428991) 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, 48727 + ... + 50824.

It is an arithmetic number, because the mean of its divisors is an integer number (26132400).

Almost surely, 2^104428999 is an apocalyptic number.

104428999 is a deficient number, since it is larger than the sum of its proper divisors (100601).

104428999 is an equidigital number, since it uses as much as digits as its factorization.

104428999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100600.

The product of its (nonzero) digits is 186624, while the sum is 46.

The square root of 104428999 is about 10219.0507876221. The cubic root of 104428999 is about 470.9126660136.

The spelling of 104428999 in words is "one hundred four million, four hundred twenty-eight thousand, nine hundred ninety-nine".