210023969 has 2 divisors, whose sum is σ = 210023970. Its totient is φ = 210023968.

The previous prime is 210023963. The next prime is 210024019. The reversal of 210023969 is 969320012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 134560000 + 75463969 = 11600^2 + 8687^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210023969 is a prime.

It is a super-2 number, since 2×210023969² = 88220135109025922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (210023963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105011984 + 105011985.

It is an arithmetic number, because the mean of its divisors is an integer number (105011985).

Almost surely, 2^210023969 is an apocalyptic number.

It is an amenable number.

210023969 is a deficient number, since it is larger than the sum of its proper divisors (1).

210023969 is an equidigital number, since it uses as much as digits as its factorization.

210023969 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 210023969 is about 14492.2037316621. The cubic root of 210023969 is about 594.4148086803.

The spelling of 210023969 in words is "two hundred ten million, twenty-three thousand, nine hundred sixty-nine".