82369949 has 2 divisors, whose sum is σ = 82369950. Its totient is φ = 82369948.

The previous prime is 82369919. The next prime is 82369951. The reversal of 82369949 is 94996328.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 79530724 + 2839225 = 8918^2 + 1685^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-82369949 is a prime.

Together with 82369951, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 82369897 and 82369906.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (82369919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41184974 + 41184975.

It is an arithmetic number, because the mean of its divisors is an integer number (41184975).

Almost surely, 2^82369949 is an apocalyptic number.

It is an amenable number.

82369949 is a deficient number, since it is larger than the sum of its proper divisors (1).

82369949 is an equidigital number, since it uses as much as digits as its factorization.

82369949 is an evil number, because the sum of its binary digits is even.

The product of its digits is 839808, while the sum is 50.

The square root of 82369949 is about 9075.7891667887. The cubic root of 82369949 is about 435.1005166931.

The spelling of 82369949 in words is "eighty-two million, three hundred sixty-nine thousand, nine hundred forty-nine".