83744869 has 8 divisors (see below), whose sum is σ = 90314840. Its totient is φ = 77193216.

The previous prime is 83744861. The next prime is 83744891. The reversal of 83744869 is 96844738.

It can be written as a sum of positive squares in 4 ways, for example, as 260100 + 83484769 = 510^2 + 9137^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 83744869 - 2³ = 83744861 is a prime.

It is a super-2 number, since 2×83744869² = 14026406167654322, 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 (83744861) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5809 + ... + 14185.

It is an arithmetic number, because the mean of its divisors is an integer number (11289355).

Almost surely, 2^83744869 is an apocalyptic number.

It is an amenable number.

83744869 is a deficient number, since it is larger than the sum of its proper divisors (6569971).

83744869 is a wasteful number, since it uses less digits than its factorization.

83744869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9159.

The product of its digits is 1161216, while the sum is 49.

The square root of 83744869 is about 9151.2222680907. Note that the first 4 decimals coincide. The cubic root of 83744869 is about 437.5080710348.

The spelling of 83744869 in words is "eighty-three million, seven hundred forty-four thousand, eight hundred sixty-nine".