83147917 has 8 divisors (see below), whose sum is σ = 85606400. Its totient is φ = 80700624.

The previous prime is 83147893. The next prime is 83147923. The reversal of 83147917 is 71974138.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-83147917 is a prime.

It is a super-2 number, since 2×83147917² = 13827152202877778, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 83147917.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83147957) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13684 + ... + 18802.

It is an arithmetic number, because the mean of its divisors is an integer number (10700800).

Almost surely, 2^83147917 is an apocalyptic number.

It is an amenable number.

83147917 is a deficient number, since it is larger than the sum of its proper divisors (2458483).

83147917 is a wasteful number, since it uses less digits than its factorization.

83147917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5595.

The product of its digits is 42336, while the sum is 40.

The square root of 83147917 is about 9118.5479655480. The cubic root of 83147917 is about 436.4660396333.

The spelling of 83147917 in words is "eighty-three million, one hundred forty-seven thousand, nine hundred seventeen".