80861293 has 2 divisors, whose sum is σ = 80861294. Its totient is φ = 80861292.

The previous prime is 80861273. The next prime is 80861327. The reversal of 80861293 is 39216808.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52099524 + 28761769 = 7218^2 + 5363^2 .

It is a cyclic number.

It is not a de Polignac number, because 80861293 - 2⁹ = 80860781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80861213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40430646 + 40430647.

It is an arithmetic number, because the mean of its divisors is an integer number (40430647).

Almost surely, 2^80861293 is an apocalyptic number.

It is an amenable number.

80861293 is a deficient number, since it is larger than the sum of its proper divisors (1).

80861293 is an equidigital number, since it uses as much as digits as its factorization.

80861293 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 80861293 is about 8992.2907537512. The cubic root of 80861293 is about 432.4277545359.

The spelling of 80861293 in words is "eighty million, eight hundred sixty-one thousand, two hundred ninety-three".