100409999 has 8 divisors (see below), whose sum is σ = 101175360. Its totient is φ = 99648000.

The previous prime is 100409993. The next prime is 100410029. The reversal of 100409999 is 999904001.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-100409999 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 (100409993) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96122 + ... + 97160.

It is an arithmetic number, because the mean of its divisors is an integer number (12646920).

Almost surely, 2^100409999 is an apocalyptic number.

100409999 is a deficient number, since it is larger than the sum of its proper divisors (765361).

100409999 is a wasteful number, since it uses less digits than its factorization.

100409999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1681.

The product of its (nonzero) digits is 26244, while the sum is 41.

The square root of 100409999 is about 10020.4789805677. The cubic root of 100409999 is about 464.7923673159.

The spelling of 100409999 in words is "one hundred million, four hundred nine thousand, nine hundred ninety-nine".