83513917 has 4 divisors (see below), whose sum is σ = 83702880. Its totient is φ = 83324956.

The previous prime is 83513891. The next prime is 83513923. The reversal of 83513917 is 71931538.

It is a happy number.

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 a cyclic number.

It is not a de Polignac number, because 83513917 - 2⁷ = 83513789 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 (83513977) 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, 93817 + ... + 94702.

It is an arithmetic number, because the mean of its divisors is an integer number (20925720).

Almost surely, 2^83513917 is an apocalyptic number.

It is an amenable number.

83513917 is a deficient number, since it is larger than the sum of its proper divisors (188963).

83513917 is a wasteful number, since it uses less digits than its factorization.

83513917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188962.

The product of its digits is 22680, while the sum is 37.

The square root of 83513917 is about 9138.5949138804. The cubic root of 83513917 is about 437.1055134661.

The spelling of 83513917 in words is "eighty-three million, five hundred thirteen thousand, nine hundred seventeen".