20095989 has 8 divisors (see below), whose sum is σ = 28370880. Its totient is φ = 12609216.

The previous prime is 20095987. The next prime is 20096039. The reversal of 20095989 is 98959002.

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

It is not a de Polignac number, because 20095989 - 2¹ = 20095987 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20095989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20095981) 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, 196969 + ... + 197070.

It is an arithmetic number, because the mean of its divisors is an integer number (3546360).

Almost surely, 2^20095989 is an apocalyptic number.

It is an amenable number.

20095989 is a deficient number, since it is larger than the sum of its proper divisors (8274891).

20095989 is a wasteful number, since it uses less digits than its factorization.

20095989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394059.

The product of its (nonzero) digits is 58320, while the sum is 42.

The square root of 20095989 is about 4482.8550054625. The cubic root of 20095989 is about 271.8753258286.

The spelling of 20095989 in words is "twenty million, ninety-five thousand, nine hundred eighty-nine".