20599941 has 4 divisors (see below), whose sum is σ = 27466592. Its totient is φ = 13733292.

The previous prime is 20599921. The next prime is 20599949. The reversal of 20599941 is 14999502.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 20599941 - 2¹⁷ = 20468869 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20599941.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20599949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3433321 + ... + 3433326.

It is an arithmetic number, because the mean of its divisors is an integer number (6866648).

Almost surely, 2^20599941 is an apocalyptic number.

It is an amenable number.

20599941 is a deficient number, since it is larger than the sum of its proper divisors (6866651).

20599941 is an equidigital number, since it uses as much as digits as its factorization.

20599941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6866650.

The product of its (nonzero) digits is 29160, while the sum is 39.

The square root of 20599941 is about 4538.7157875329. The cubic root of 20599941 is about 274.1292169397.

The spelling of 20599941 in words is "twenty million, five hundred ninety-nine thousand, nine hundred forty-one".