20959093 has 4 divisors (see below), whose sum is σ = 21000780. Its totient is φ = 20917408.

The previous prime is 20959091. The next prime is 20959097. The reversal of 20959093 is 39095902.

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

It can be written as a sum of positive squares in 2 ways, for example, as 11336689 + 9622404 = 3367^2 + 3102^2 .

It is a cyclic number.

It is not a de Polignac number, because 20959093 - 2¹ = 20959091 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 (20959091) 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, 20080 + ... + 21097.

It is an arithmetic number, because the mean of its divisors is an integer number (5250195).

Almost surely, 2^20959093 is an apocalyptic number.

It is an amenable number.

20959093 is a deficient number, since it is larger than the sum of its proper divisors (41687).

20959093 is an equidigital number, since it uses as much as digits as its factorization.

20959093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41686.

The product of its (nonzero) digits is 21870, while the sum is 37.

The square root of 20959093 is about 4578.1101996348. The cubic root of 20959093 is about 275.7131594283.

The spelling of 20959093 in words is "twenty million, nine hundred fifty-nine thousand, ninety-three".