83812369 has 2 divisors, whose sum is σ = 83812370. Its totient is φ = 83812368.

The previous prime is 83812331. The next prime is 83812387. The reversal of 83812369 is 96321838.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67043344 + 16769025 = 8188^2 + 4095^2 .

It is a cyclic number.

It is not a de Polignac number, because 83812369 - 2¹³ = 83804177 is a prime.

It is a super-2 number, since 2×83812369² = 14049026394784322, which contains 22 as substring.

It is a Chen prime.

It is an alternating number because its digits alternate between even and odd.

It is not a weakly prime, because it can be changed into another prime (83818369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41906184 + 41906185.

It is an arithmetic number, because the mean of its divisors is an integer number (41906185).

Almost surely, 2^83812369 is an apocalyptic number.

It is an amenable number.

83812369 is a deficient number, since it is larger than the sum of its proper divisors (1).

83812369 is an equidigital number, since it uses as much as digits as its factorization.

83812369 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 62208, while the sum is 40.

The square root of 83812369 is about 9154.9095571720. The cubic root of 83812369 is about 437.6255861506.

The spelling of 83812369 in words is "eighty-three million, eight hundred twelve thousand, three hundred sixty-nine".