82399895 has 16 divisors (see below), whose sum is σ = 101515680. Its totient is φ = 64182144.

The previous prime is 82399871. The next prime is 82399907. The reversal of 82399895 is 59899328.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 82399895 - 2¹⁰ = 82398871 is a prime.

It is a super-2 number, since 2×82399895² = 13579485392022050, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (53).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35717 + ... + 37953.

It is an arithmetic number, because the mean of its divisors is an integer number (6344730).

Almost surely, 2^82399895 is an apocalyptic number.

82399895 is a deficient number, since it is larger than the sum of its proper divisors (19115785).

82399895 is a wasteful number, since it uses less digits than its factorization.

82399895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2434.

The product of its digits is 1399680, while the sum is 53.

The square root of 82399895 is about 9077.4387907603. The cubic root of 82399895 is about 435.1532379488.

The spelling of 82399895 in words is "eighty-two million, three hundred ninety-nine thousand, eight hundred ninety-five".