83845969 has 2 divisors, whose sum is σ = 83845970. Its totient is φ = 83845968.

The previous prime is 83845967. The next prime is 83845987. The reversal of 83845969 is 96954838.

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., 81000000 + 2845969 = 9000^2 + 1687^2 .

It is a cyclic number.

It is not a de Polignac number, because 83845969 - 2¹ = 83845967 is a prime.

It is a super-2 number, since 2×83845969² = 14060293035097922, which contains 22 as substring.

Together with 83845967, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (83845963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41922984 + 41922985.

It is an arithmetic number, because the mean of its divisors is an integer number (41922985).

Almost surely, 2^83845969 is an apocalyptic number.

It is an amenable number.

83845969 is a deficient number, since it is larger than the sum of its proper divisors (1).

83845969 is an equidigital number, since it uses as much as digits as its factorization.

83845969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1866240, while the sum is 52.

The square root of 83845969 is about 9156.7444542261. The cubic root of 83845969 is about 437.6840590441.

The spelling of 83845969 in words is "eighty-three million, eight hundred forty-five thousand, nine hundred sixty-nine".