83835813 has 4 divisors (see below), whose sum is σ = 111781088. Its totient is φ = 55890540.

The previous prime is 83835793. The next prime is 83835833. The reversal of 83835813 is 31853838.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (83835793) and next prime (83835833).

It is not a de Polignac number, because 83835813 - 2¹⁰ = 83834789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83835833) 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, 13972633 + ... + 13972638.

It is an arithmetic number, because the mean of its divisors is an integer number (27945272).

Almost surely, 2^83835813 is an apocalyptic number.

It is an amenable number.

83835813 is a deficient number, since it is larger than the sum of its proper divisors (27945275).

83835813 is a wasteful number, since it uses less digits than its factorization.

83835813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27945274.

The product of its digits is 69120, while the sum is 39.

The square root of 83835813 is about 9156.1898735227. The cubic root of 83835813 is about 437.6663865635. Note that the first 3 decimals are identical.

It can be divided in two parts, 83835 and 813, that added together give a palindrome (84648).

The spelling of 83835813 in words is "eighty-three million, eight hundred thirty-five thousand, eight hundred thirteen".