83616394 has 4 divisors (see below), whose sum is σ = 125424594. Its totient is φ = 41808196.

The previous prime is 83616391. The next prime is 83616409. The reversal of 83616394 is 49361638.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 49361638 = 2 ⋅24680819.

It can be written as a sum of positive squares in only one way, i.e., 53509225 + 30107169 = 7315^2 + 5487^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (83616391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20904097 + ... + 20904100.

Almost surely, 2^83616394 is an apocalyptic number.

83616394 is a deficient number, since it is larger than the sum of its proper divisors (41808200).

83616394 is a wasteful number, since it uses less digits than its factorization.

83616394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41808199.

The product of its digits is 93312, while the sum is 40.

The square root of 83616394 is about 9144.2000196846. The cubic root of 83616394 is about 437.2842260064.

The spelling of 83616394 in words is "eighty-three million, six hundred sixteen thousand, three hundred ninety-four".