9723869 has 2 divisors, whose sum is σ = 9723870. Its totient is φ = 9723868.

The previous prime is 9723853. The next prime is 9723887. The reversal of 9723869 is 9683279.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8631844 + 1092025 = 2938^2 + 1045^2 .

It is an emirp because it is prime and its reverse (9683279) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9723869 - 2⁴ = 9723853 is a prime.

It is a super-2 number, since 2×9723869² = 189107256658322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9723809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4861934 + 4861935.

It is an arithmetic number, because the mean of its divisors is an integer number (4861935).

Almost surely, 2^9723869 is an apocalyptic number.

It is an amenable number.

9723869 is a deficient number, since it is larger than the sum of its proper divisors (1).

9723869 is an equidigital number, since it uses as much as digits as its factorization.

9723869 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 163296, while the sum is 44.

The square root of 9723869 is about 3118.3118830547. The cubic root of 9723869 is about 213.4419106041.

The spelling of 9723869 in words is "nine million, seven hundred twenty-three thousand, eight hundred sixty-nine".