82939569 has 8 divisors (see below), whose sum is σ = 110729760. Its totient is φ = 55221216.

The previous prime is 82939547. The next prime is 82939589. The reversal of 82939569 is 96593928.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 82939569 - 2⁹ = 82939057 is a prime.

It is a super-2 number, since 2×82939569² = 13757944211811522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (82939589) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15204 + ... + 19925.

It is an arithmetic number, because the mean of its divisors is an integer number (13841220).

Almost surely, 2^82939569 is an apocalyptic number.

It is an amenable number.

82939569 is a deficient number, since it is larger than the sum of its proper divisors (27790191).

82939569 is a wasteful number, since it uses less digits than its factorization.

82939569 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35919.

The product of its digits is 1049760, while the sum is 51.

The square root of 82939569 is about 9107.1163932389. The cubic root of 82939569 is about 436.1011762644.

The spelling of 82939569 in words is "eighty-two million, nine hundred thirty-nine thousand, five hundred sixty-nine".