83916869 has 4 divisors (see below), whose sum is σ = 84126540. Its totient is φ = 83707200.

The previous prime is 83916841. The next prime is 83916871. The reversal of 83916869 is 96861938.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 52388644 + 31528225 = 7238^2 + 5615^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-83916869 is a prime.

It is a super-2 number, since 2×83916869² = 14084081805526322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83916809) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104234 + ... + 105035.

It is an arithmetic number, because the mean of its divisors is an integer number (21031635).

Almost surely, 2^83916869 is an apocalyptic number.

It is an amenable number.

83916869 is a deficient number, since it is larger than the sum of its proper divisors (209671).

83916869 is a wasteful number, since it uses less digits than its factorization.

83916869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209670.

The product of its digits is 559872, while the sum is 50.

The square root of 83916869 is about 9160.6150994352. The cubic root of 83916869 is about 437.8073925705.

The spelling of 83916869 in words is "eighty-three million, nine hundred sixteen thousand, eight hundred sixty-nine".