82390013 has 4 divisors (see below), whose sum is σ = 84143040. Its totient is φ = 80636988.

The previous prime is 82389991. The next prime is 82390027. The reversal of 82390013 is 31009328.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 82390013 - 2⁶ = 82389949 is a prime.

It is a super-2 number, since 2×82390013² = 13576228484280338, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82390613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 876443 + ... + 876536.

It is an arithmetic number, because the mean of its divisors is an integer number (21035760).

Almost surely, 2^82390013 is an apocalyptic number.

It is an amenable number.

82390013 is a deficient number, since it is larger than the sum of its proper divisors (1753027).

82390013 is a wasteful number, since it uses less digits than its factorization.

82390013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1753026.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 82390013 is about 9076.8944579079. The cubic root of 82390013 is about 435.1358416636.

The spelling of 82390013 in words is "eighty-two million, three hundred ninety thousand, thirteen".