20093471 has 2 divisors, whose sum is σ = 20093472. Its totient is φ = 20093470.

The previous prime is 20093459. The next prime is 20093477. The reversal of 20093471 is 17439002.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20093471 is a prime.

It is a super-3 number, since 3×20093471³ (a number of 23 digits) contains 333 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20093471.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20093477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10046735 + 10046736.

It is an arithmetic number, because the mean of its divisors is an integer number (10046736).

Almost surely, 2^20093471 is an apocalyptic number.

20093471 is a deficient number, since it is larger than the sum of its proper divisors (1).

20093471 is an equidigital number, since it uses as much as digits as its factorization.

20093471 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 20093471 is about 4482.5741488569. The cubic root of 20093471 is about 271.8639701519.

The spelling of 20093471 in words is "twenty million, ninety-three thousand, four hundred seventy-one".