20116499 has 4 divisors (see below), whose sum is σ = 21663936. Its totient is φ = 18569064.

The previous prime is 20116487. The next prime is 20116531. The reversal of 20116499 is 99461102.

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 20116499 - 2⁴ = 20116483 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20116429) 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, 773699 + ... + 773724.

It is an arithmetic number, because the mean of its divisors is an integer number (5415984).

Almost surely, 2^20116499 is an apocalyptic number.

20116499 is a deficient number, since it is larger than the sum of its proper divisors (1547437).

20116499 is a wasteful number, since it uses less digits than its factorization.

20116499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1547436.

The product of its (nonzero) digits is 3888, while the sum is 32.

The square root of 20116499 is about 4485.1420267367. The cubic root of 20116499 is about 271.9677865181.

The spelling of 20116499 in words is "twenty million, one hundred sixteen thousand, four hundred ninety-nine".