80439893 has 2 divisors, whose sum is σ = 80439894. Its totient is φ = 80439892.

The previous prime is 80439883. The next prime is 80439899. The reversal of 80439893 is 39893408.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 79887844 + 552049 = 8938^2 + 743^2 .

It is a cyclic number.

It is not a de Polignac number, because 80439893 - 2⁶ = 80439829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80439899) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40219946 + 40219947.

It is an arithmetic number, because the mean of its divisors is an integer number (40219947).

Almost surely, 2^80439893 is an apocalyptic number.

It is an amenable number.

80439893 is a deficient number, since it is larger than the sum of its proper divisors (1).

80439893 is an equidigital number, since it uses as much as digits as its factorization.

80439893 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 186624, while the sum is 44.

The square root of 80439893 is about 8968.8289648092. The cubic root of 80439893 is about 431.6752621402.

The spelling of 80439893 in words is "eighty million, four hundred thirty-nine thousand, eight hundred ninety-three".