20016959 has 8 divisors (see below), whose sum is σ = 20396448. Its totient is φ = 19640320.

The previous prime is 20016947. The next prime is 20016961. The reversal of 20016959 is 95961002.

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

It is a cyclic number.

It is not a de Polignac number, because 20016959 - 2⁴ = 20016943 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20010959) 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, 17699 + ... + 18795.

It is an arithmetic number, because the mean of its divisors is an integer number (2549556).

Almost surely, 2^20016959 is an apocalyptic number.

20016959 is a deficient number, since it is larger than the sum of its proper divisors (379489).

20016959 is a wasteful number, since it uses less digits than its factorization.

20016959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1425.

The product of its (nonzero) digits is 4860, while the sum is 32.

The square root of 20016959 is about 4474.0316270675. The cubic root of 20016959 is about 271.5184629979.

The spelling of 20016959 in words is "twenty million, sixteen thousand, nine hundred fifty-nine".