20479367 has 2 divisors, whose sum is σ = 20479368. Its totient is φ = 20479366.

The previous prime is 20479363. The next prime is 20479369. The reversal of 20479367 is 76397402.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20479367 - 2² = 20479363 is a prime.

Together with 20479369, it forms a pair of twin primes.

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 20479367.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20479363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10239683 + 10239684.

It is an arithmetic number, because the mean of its divisors is an integer number (10239684).

Almost surely, 2^20479367 is an apocalyptic number.

20479367 is a deficient number, since it is larger than the sum of its proper divisors (1).

20479367 is an equidigital number, since it uses as much as digits as its factorization.

20479367 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 63504, while the sum is 38.

The square root of 20479367 is about 4525.4134617734. The cubic root of 20479367 is about 273.5933326508.

The spelling of 20479367 in words is "twenty million, four hundred seventy-nine thousand, three hundred sixty-seven".