83821927 has 4 divisors (see below), whose sum is σ = 95796496. Its totient is φ = 71847360.

The previous prime is 83821897. The next prime is 83821957. The reversal of 83821927 is 72912838.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (83821897) and next prime (83821957).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-83821927 is a prime.

It is a super-2 number, since 2×83821927² = 14052230891986658, 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 83821927.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83821957) 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, 5987274 + ... + 5987287.

It is an arithmetic number, because the mean of its divisors is an integer number (23949124).

Almost surely, 2^83821927 is an apocalyptic number.

83821927 is a deficient number, since it is larger than the sum of its proper divisors (11974569).

83821927 is a wasteful number, since it uses less digits than its factorization.

83821927 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11974568.

The product of its digits is 48384, while the sum is 40.

The square root of 83821927 is about 9155.4315572779. The cubic root of 83821927 is about 437.6422211907.

It can be divided in two parts, 83821 and 927, that added together give a palindrome (84748).

The spelling of 83821927 in words is "eighty-three million, eight hundred twenty-one thousand, nine hundred twenty-seven".