83745399 has 12 divisors (see below), whose sum is σ = 114095864. Its totient is φ = 54638064.

The previous prime is 83745391. The next prime is 83745427. The reversal of 83745399 is 99354738.

It is not a de Polignac number, because 83745399 - 2³ = 83745391 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 (83745391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 309 + ... + 12945.

Almost surely, 2^83745399 is an apocalyptic number.

83745399 is a deficient number, since it is larger than the sum of its proper divisors (30350465).

83745399 is a wasteful number, since it uses less digits than its factorization.

83745399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12734 (or 12687 counting only the distinct ones).

The product of its digits is 816480, while the sum is 48.

The square root of 83745399 is about 9151.2512259253. The cubic root of 83745399 is about 437.5089939920.

The spelling of 83745399 in words is "eighty-three million, seven hundred forty-five thousand, three hundred ninety-nine".