20296949 has 2 divisors, whose sum is σ = 20296950. Its totient is φ = 20296948.

The previous prime is 20296891. The next prime is 20296951. The reversal of 20296949 is 94969202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11682724 + 8614225 = 3418^2 + 2935^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20296949 is a prime.

It is a super-2 number, since 2×20296949² = 823932277417202, which contains 22 as substring.

Together with 20296951, 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 (20296849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10148474 + 10148475.

It is an arithmetic number, because the mean of its divisors is an integer number (10148475).

Almost surely, 2^20296949 is an apocalyptic number.

It is an amenable number.

20296949 is a deficient number, since it is larger than the sum of its proper divisors (1).

20296949 is an equidigital number, since it uses as much as digits as its factorization.

20296949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69984, while the sum is 41.

The square root of 20296949 is about 4505.2135354498. The cubic root of 20296949 is about 272.7785732419.

The spelling of 20296949 in words is "twenty million, two hundred ninety-six thousand, nine hundred forty-nine".