82987949 has 8 divisors (see below), whose sum is σ = 90599040. Its totient is φ = 75388000.

The previous prime is 82987921. The next prime is 82987951. The reversal of 82987949 is 94978928.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 82987949 - 2²⁰ = 81939373 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 82987894 and 82987903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82987909) 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, 24257 + ... + 27465.

It is an arithmetic number, because the mean of its divisors is an integer number (11324880).

Almost surely, 2^82987949 is an apocalyptic number.

It is an amenable number.

82987949 is a deficient number, since it is larger than the sum of its proper divisors (7611091).

82987949 is a wasteful number, since it uses less digits than its factorization.

82987949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5571.

The product of its digits is 2612736, while the sum is 56.

The square root of 82987949 is about 9109.7721705869. The cubic root of 82987949 is about 436.1859547527.

It can be divided in two parts, 829879 and 49, that added together give a palindrome (829928).

The spelling of 82987949 in words is "eighty-two million, nine hundred eighty-seven thousand, nine hundred forty-nine".