83909617 has 16 divisors (see below), whose sum is σ = 94406400. Its totient is φ = 73923840.

The previous prime is 83909611. The next prime is 83909627. The reversal of 83909617 is 71690938.

It is a cyclic number.

It is not a de Polignac number, because 83909617 - 2¹¹ = 83907569 is a prime.

It is not an unprimeable number, because it can be changed into a prime (83909611) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55609 + ... + 57097.

It is an arithmetic number, because the mean of its divisors is an integer number (5900400).

Almost surely, 2^83909617 is an apocalyptic number.

It is an amenable number.

83909617 is a deficient number, since it is larger than the sum of its proper divisors (10496783).

83909617 is a wasteful number, since it uses less digits than its factorization.

83909617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1656.

The product of its (nonzero) digits is 81648, while the sum is 43.

The square root of 83909617 is about 9160.2192659346. The cubic root of 83909617 is about 437.7947806022.

The spelling of 83909617 in words is "eighty-three million, nine hundred nine thousand, six hundred seventeen".