80994839 has 2 divisors, whose sum is σ = 80994840. Its totient is φ = 80994838.

The previous prime is 80994773. The next prime is 80994841. The reversal of 80994839 is 93849908.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 80994839 - 2²⁴ = 64217623 is a prime.

Together with 80994841, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80994899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40497419 + 40497420.

It is an arithmetic number, because the mean of its divisors is an integer number (40497420).

Almost surely, 2^80994839 is an apocalyptic number.

80994839 is a deficient number, since it is larger than the sum of its proper divisors (1).

80994839 is an equidigital number, since it uses as much as digits as its factorization.

80994839 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 559872, while the sum is 50.

The square root of 80994839 is about 8999.7132732104. The cubic root of 80994839 is about 432.6656814526.

The spelling of 80994839 in words is "eighty million, nine hundred ninety-four thousand, eight hundred thirty-nine".