82961239 has 16 divisors (see below), whose sum is σ = 91284480. Its totient is φ = 75098880.

The previous prime is 82961237. The next prime is 82961267. The reversal of 82961239 is 93216928.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 82961239 - 2¹ = 82961237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82961237) 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, 48039 + ... + 49735.

It is an arithmetic number, because the mean of its divisors is an integer number (5705280).

Almost surely, 2^82961239 is an apocalyptic number.

82961239 is a deficient number, since it is larger than the sum of its proper divisors (8323241).

82961239 is a wasteful number, since it uses less digits than its factorization.

82961239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1830.

The product of its digits is 46656, while the sum is 40.

The square root of 82961239 is about 9108.3060444849. The cubic root of 82961239 is about 436.1391536724.

The spelling of 82961239 in words is "eighty-two million, nine hundred sixty-one thousand, two hundred thirty-nine".