82399407 has 16 divisors (see below), whose sum is σ = 114392160. Its totient is φ = 52710912.

The previous prime is 82399403. The next prime is 82399433. The reversal of 82399407 is 70499328.

It is not a de Polignac number, because 82399407 - 2² = 82399403 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82399403) 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, 3019 + ... + 13187.

It is an arithmetic number, because the mean of its divisors is an integer number (7149510).

Almost surely, 2^82399407 is an apocalyptic number.

82399407 is a deficient number, since it is larger than the sum of its proper divisors (31992753).

82399407 is a wasteful number, since it uses less digits than its factorization.

82399407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10282.

The product of its (nonzero) digits is 108864, while the sum is 42.

The square root of 82399407 is about 9077.4119108918. The cubic root of 82399407 is about 435.1523789056.

The spelling of 82399407 in words is "eighty-two million, three hundred ninety-nine thousand, four hundred seven".