109900009 has 4 divisors (see below), whose sum is σ = 115684240. Its totient is φ = 104115780.

The previous prime is 109899997. The next prime is 109900031. The reversal of 109900009 is 900009901.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 109900009 - 2¹⁷ = 109768937 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 109900009.

It is not an unprimeable number, because it can be changed into a prime (109900079) 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, 2892087 + ... + 2892124.

It is an arithmetic number, because the mean of its divisors is an integer number (28921060).

Almost surely, 2^109900009 is an apocalyptic number.

109900009 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

109900009 is a deficient number, since it is larger than the sum of its proper divisors (5784231).

109900009 is an equidigital number, since it uses as much as digits as its factorization.

109900009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5784230.

The product of its (nonzero) digits is 729, while the sum is 28.

The square root of 109900009 is about 10483.3205140356. The cubic root of 109900009 is about 478.9967602200.

The spelling of 109900009 in words is "one hundred nine million, nine hundred thousand, nine".