80494861 has 2 divisors, whose sum is σ = 80494862. Its totient is φ = 80494860.

The previous prime is 80494831. The next prime is 80494867. The reversal of 80494861 is 16849408.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 72760900 + 7733961 = 8530^2 + 2781^2 .

It is a cyclic number.

It is not a de Polignac number, because 80494861 - 2⁵ = 80494829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80494867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40247430 + 40247431.

It is an arithmetic number, because the mean of its divisors is an integer number (40247431).

Almost surely, 2^80494861 is an apocalyptic number.

It is an amenable number.

80494861 is a deficient number, since it is larger than the sum of its proper divisors (1).

80494861 is an equidigital number, since it uses as much as digits as its factorization.

80494861 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 55296, while the sum is 40.

The square root of 80494861 is about 8971.8928326190. The cubic root of 80494861 is about 431.7735671069.

The spelling of 80494861 in words is "eighty million, four hundred ninety-four thousand, eight hundred sixty-one".