83928117 has 32 divisors (see below), whose sum is σ = 142490880. Its totient is φ = 42739200.

The previous prime is 83928113. The next prime is 83928121. The reversal of 83928117 is 71182938.

It is an interprime number because it is at equal distance from previous prime (83928113) and next prime (83928121).

It is not a de Polignac number, because 83928117 - 2² = 83928113 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83928113) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2617 + ... + 13217.

It is an arithmetic number, because the mean of its divisors is an integer number (4452840).

Almost surely, 2^83928117 is an apocalyptic number.

83928117 is a gapful number since it is divisible by the number (87) formed by its first and last digit.

It is an amenable number.

83928117 is a deficient number, since it is larger than the sum of its proper divisors (58562763).

83928117 is a wasteful number, since it uses less digits than its factorization.

83928117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10653.

The product of its digits is 24192, while the sum is 39.

The square root of 83928117 is about 9161.2290114373. The cubic root of 83928117 is about 437.8269525533.

The spelling of 83928117 in words is "eighty-three million, nine hundred twenty-eight thousand, one hundred seventeen".