83985297 has 16 divisors (see below), whose sum is σ = 122627520. Its totient is φ = 50705600.

The previous prime is 83985283. The next prime is 83985299. The reversal of 83985297 is 79258938.

It is not a de Polignac number, because 83985297 - 2⁴ = 83985281 is a prime.

It is a super-2 number, since 2×83985297² = 14107060224356418, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (83985299) 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, 4147 + ... + 13607.

It is an arithmetic number, because the mean of its divisors is an integer number (7664220).

Almost surely, 2^83985297 is an apocalyptic number.

It is an amenable number.

83985297 is a deficient number, since it is larger than the sum of its proper divisors (38642223).

83985297 is a wasteful number, since it uses less digits than its factorization.

83985297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9744.

The product of its digits is 1088640, while the sum is 51.

The square root of 83985297 is about 9164.3492403989. The cubic root of 83985297 is about 437.9263600891.

It can be divided in two parts, 8398 and 5297, that added together give a triangular number (13695 = T₁₆₅).

The spelling of 83985297 in words is "eighty-three million, nine hundred eighty-five thousand, two hundred ninety-seven".