20869097 has 2 divisors, whose sum is σ = 20869098. Its totient is φ = 20869096.

The previous prime is 20869091. The next prime is 20869103. The reversal of 20869097 is 79096802.

It is a balanced prime because it is at equal distance from previous prime (20869091) and next prime (20869103).

It can be written as a sum of positive squares in only one way, i.e., 19571776 + 1297321 = 4424^2 + 1139^2 .

It is a cyclic number.

It is not a de Polignac number, because 20869097 - 2¹⁰ = 20868073 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (20869091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10434548 + 10434549.

It is an arithmetic number, because the mean of its divisors is an integer number (10434549).

Almost surely, 2^20869097 is an apocalyptic number.

It is an amenable number.

20869097 is a deficient number, since it is larger than the sum of its proper divisors (1).

20869097 is an equidigital number, since it uses as much as digits as its factorization.

20869097 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 20869097 is about 4568.2706793709. The cubic root of 20869097 is about 275.3179660974.

The spelling of 20869097 in words is "twenty million, eight hundred sixty-nine thousand, ninety-seven".