104781999 has 16 divisors (see below), whose sum is σ = 169060608. Its totient is φ = 56353152.

The previous prime is 104781973. The next prime is 104782001. The reversal of 104781999 is 999187401.

It is not a de Polignac number, because 104781999 - 2⁹ = 104781487 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (104780999) 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 15 ways as a sum of consecutive naturals, for example, 146397 + ... + 147110.

It is an arithmetic number, because the mean of its divisors is an integer number (10566288).

Almost surely, 2^104781999 is an apocalyptic number.

104781999 is a deficient number, since it is larger than the sum of its proper divisors (64278609).

104781999 is a wasteful number, since it uses less digits than its factorization.

104781999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293534.

The product of its (nonzero) digits is 163296, while the sum is 48.

The square root of 104781999 is about 10236.3078793088. The cubic root of 104781999 is about 471.4426759390.

The spelling of 104781999 in words is "one hundred four million, seven hundred eighty-one thousand, nine hundred ninety-nine".