80993461 has 2 divisors, whose sum is σ = 80993462. Its totient is φ = 80993460.

The previous prime is 80993459. The next prime is 80993503. The reversal of 80993461 is 16439908.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 47527236 + 33466225 = 6894^2 + 5785^2 .

It is a cyclic number.

It is not a de Polignac number, because 80993461 - 2¹ = 80993459 is a prime.

Together with 80993459, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80993411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40496730 + 40496731.

It is an arithmetic number, because the mean of its divisors is an integer number (40496731).

Almost surely, 2^80993461 is an apocalyptic number.

It is an amenable number.

80993461 is a deficient number, since it is larger than the sum of its proper divisors (1).

80993461 is an equidigital number, since it uses as much as digits as its factorization.

80993461 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 80993461 is about 8999.6367148902. The cubic root of 80993461 is about 432.6632277296.

The spelling of 80993461 in words is "eighty million, nine hundred ninety-three thousand, four hundred sixty-one".