20410969 has 2 divisors, whose sum is σ = 20410970. Its totient is φ = 20410968.

The previous prime is 20410963. The next prime is 20410981. The reversal of 20410969 is 96901402.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12638025 + 7772944 = 3555^2 + 2788^2 .

It is a cyclic number.

It is not a de Polignac number, because 20410969 - 2¹⁵ = 20378201 is a prime.

It is a super-2 number, since 2×20410969² = 833215311037922, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20410969.

It is not a weakly prime, because it can be changed into another prime (20410963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10205484 + 10205485.

It is an arithmetic number, because the mean of its divisors is an integer number (10205485).

Almost surely, 2^20410969 is an apocalyptic number.

It is an amenable number.

20410969 is a deficient number, since it is larger than the sum of its proper divisors (1).

20410969 is an equidigital number, since it uses as much as digits as its factorization.

20410969 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 20410969 is about 4517.8500417787. The cubic root of 20410969 is about 273.2884060932.

The spelling of 20410969 in words is "twenty million, four hundred ten thousand, nine hundred sixty-nine".