82124399 has 16 divisors (see below), whose sum is σ = 99683136. Its totient is φ = 66048000.

The previous prime is 82124389. The next prime is 82124407. The reversal of 82124399 is 99342128.

It is a cyclic number.

It is not a de Polignac number, because 82124399 - 2¹² = 82120303 is a prime.

It is a super-2 number, since 2×82124399² = 13488833822222402, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82124309) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46859 + ... + 48579.

It is an arithmetic number, because the mean of its divisors is an integer number (6230196).

Almost surely, 2^82124399 is an apocalyptic number.

82124399 is a deficient number, since it is larger than the sum of its proper divisors (17558737).

82124399 is a wasteful number, since it uses less digits than its factorization.

82124399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2146.

The product of its digits is 31104, while the sum is 38.

The square root of 82124399 is about 9062.2513207260. The cubic root of 82124399 is about 434.6677323510.

The spelling of 82124399 in words is "eighty-two million, one hundred twenty-four thousand, three hundred ninety-nine".