20927099 has 4 divisors (see below), whose sum is σ = 21134400. Its totient is φ = 20719800.

The previous prime is 20927063. The next prime is 20927107. The reversal of 20927099 is 99072902.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20927099 - 2¹² = 20923003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20927059) 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, 103499 + ... + 103700.

It is an arithmetic number, because the mean of its divisors is an integer number (5283600).

Almost surely, 2^20927099 is an apocalyptic number.

20927099 is a deficient number, since it is larger than the sum of its proper divisors (207301).

20927099 is a wasteful number, since it uses less digits than its factorization.

20927099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207300.

The product of its (nonzero) digits is 20412, while the sum is 38.

The square root of 20927099 is about 4574.6146285780. The cubic root of 20927099 is about 275.5727961799.

The spelling of 20927099 in words is "twenty million, nine hundred twenty-seven thousand, ninety-nine".