82987479 has 12 divisors (see below), whose sum is σ = 120220776. Its totient is φ = 55163472.

The previous prime is 82987469. The next prime is 82987493. The reversal of 82987479 is 97478928.

82987479 is a `hidden beast` number, since 82 + 98 + 7 + 479 = 666.

It is not a de Polignac number, because 82987479 - 2⁵ = 82987447 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82987469) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10164 + ... + 16409.

It is an arithmetic number, because the mean of its divisors is an integer number (10018398).

Almost surely, 2^82987479 is an apocalyptic number.

82987479 is a deficient number, since it is larger than the sum of its proper divisors (37233297).

82987479 is a wasteful number, since it uses less digits than its factorization.

82987479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26926 (or 26923 counting only the distinct ones).

The product of its digits is 2032128, while the sum is 54.

The square root of 82987479 is about 9109.7463740765. The cubic root of 82987479 is about 436.1851313087.

It can be divided in two parts, 8 and 2987479, that multiplied together give a palindrome (23899832).

The spelling of 82987479 in words is "eighty-two million, nine hundred eighty-seven thousand, four hundred seventy-nine".