80613889 has 2 divisors, whose sum is σ = 80613890. Its totient is φ = 80613888.

The previous prime is 80613839. The next prime is 80613899. The reversal of 80613889 is 98831608.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 58599025 + 22014864 = 7655^2 + 4692^2 .

It is a cyclic number.

It is not a de Polignac number, because 80613889 - 2¹³ = 80605697 is a prime.

It is not a weakly prime, because it can be changed into another prime (80613839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40306944 + 40306945.

It is an arithmetic number, because the mean of its divisors is an integer number (40306945).

Almost surely, 2^80613889 is an apocalyptic number.

It is an amenable number.

80613889 is a deficient number, since it is larger than the sum of its proper divisors (1).

80613889 is an equidigital number, since it uses as much as digits as its factorization.

80613889 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 82944, while the sum is 43.

The square root of 80613889 is about 8978.5237650741. The cubic root of 80613889 is about 431.9862839295.

The spelling of 80613889 in words is "eighty million, six hundred thirteen thousand, eight hundred eighty-nine".