20092989 has 24 divisors (see below), whose sum is σ = 31764960. Its totient is φ = 11260704.

The previous prime is 20092979. The next prime is 20092999. The reversal of 20092989 is 98929002.

It is an interprime number because it is at equal distance from previous prime (20092979) and next prime (20092999).

It is not a de Polignac number, because 20092989 - 2⁵ = 20092957 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20092909) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6502 + ... + 9080.

It is an arithmetic number, because the mean of its divisors is an integer number (1323540).

Almost surely, 2^20092989 is an apocalyptic number.

It is an amenable number.

20092989 is a deficient number, since it is larger than the sum of its proper divisors (11671971).

20092989 is a wasteful number, since it uses less digits than its factorization.

20092989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2649 (or 2642 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 39.

The square root of 20092989 is about 4482.5203847835. The cubic root of 20092989 is about 271.8617963201.

The spelling of 20092989 in words is "twenty million, ninety-two thousand, nine hundred eighty-nine".