80239939 has 16 divisors (see below), whose sum is σ = 92619072. Its totient is φ = 68923008.

The previous prime is 80239903. The next prime is 80239963. The reversal of 80239939 is 93993208.

It is a happy number.

It is not a de Polignac number, because 80239939 - 2⁹ = 80239427 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 80239895 and 80239904.

It is not an unprimeable number, because it can be changed into a prime (80239979) 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, 7437 + ... + 14689.

It is an arithmetic number, because the mean of its divisors is an integer number (5788692).

Almost surely, 2^80239939 is an apocalyptic number.

80239939 is a deficient number, since it is larger than the sum of its proper divisors (12379133).

80239939 is a wasteful number, since it uses less digits than its factorization.

80239939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7326.

The product of its (nonzero) digits is 104976, while the sum is 43.

The square root of 80239939 is about 8957.6748657227. The cubic root of 80239939 is about 431.3172854755.

The spelling of 80239939 in words is "eighty million, two hundred thirty-nine thousand, nine hundred thirty-nine".