82432919 has 4 divisors (see below), whose sum is σ = 84443520. Its totient is φ = 80422320.

The previous prime is 82432891. The next prime is 82432921. The reversal of 82432919 is 91923428.

82432919 = 452² + 453² + ... + 697².

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 82432919 - 2⁸ = 82432663 is a prime.

It is a super-2 number, since 2×82432919² = 13590372269721122, 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 (82432939) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1005239 + ... + 1005320.

It is an arithmetic number, because the mean of its divisors is an integer number (21110880).

Almost surely, 2^82432919 is an apocalyptic number.

82432919 is a deficient number, since it is larger than the sum of its proper divisors (2010601).

82432919 is a wasteful number, since it uses less digits than its factorization.

82432919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2010600.

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

The square root of 82432919 is about 9079.2576238369. The cubic root of 82432919 is about 435.2113633512.

The spelling of 82432919 in words is "eighty-two million, four hundred thirty-two thousand, nine hundred nineteen".