20295479 has 2 divisors, whose sum is σ = 20295480. Its totient is φ = 20295478.

The previous prime is 20295427. The next prime is 20295481. The reversal of 20295479 is 97459202.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20295479 is a prime.

Together with 20295481, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20295419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10147739 + 10147740.

It is an arithmetic number, because the mean of its divisors is an integer number (10147740).

Almost surely, 2^20295479 is an apocalyptic number.

20295479 is a deficient number, since it is larger than the sum of its proper divisors (1).

20295479 is an equidigital number, since it uses as much as digits as its factorization.

20295479 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 20295479 is about 4505.0503881755. The cubic root of 20295479 is about 272.7719877828.

The spelling of 20295479 in words is "twenty million, two hundred ninety-five thousand, four hundred seventy-nine".