82991414 has 8 divisors (see below), whose sum is σ = 135804168. Its totient is φ = 37723360.

The previous prime is 82991413. The next prime is 82991431. The reversal of 82991414 is 41419928.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82991413) 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, 1886147 + ... + 1886190.

It is an arithmetic number, because the mean of its divisors is an integer number (16975521).

Almost surely, 2^82991414 is an apocalyptic number.

82991414 is a deficient number, since it is larger than the sum of its proper divisors (52812754).

82991414 is a wasteful number, since it uses less digits than its factorization.

82991414 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3772350.

The product of its digits is 20736, while the sum is 38.

The square root of 82991414 is about 9109.9623489892. The cubic root of 82991414 is about 436.1920253662.

It can be divided in two parts, 829914 and 14, that added together give a palindrome (829928).

The spelling of 82991414 in words is "eighty-two million, nine hundred ninety-one thousand, four hundred fourteen".