80749453 has 2 divisors, whose sum is σ = 80749454. Its totient is φ = 80749452.

The previous prime is 80749447. The next prime is 80749457. The reversal of 80749453 is 35494708.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 78623689 + 2125764 = 8867^2 + 1458^2 .

It is a cyclic number.

It is not a de Polignac number, because 80749453 - 2¹³ = 80741261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (80749457) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40374726 + 40374727.

It is an arithmetic number, because the mean of its divisors is an integer number (40374727).

Almost surely, 2^80749453 is an apocalyptic number.

It is an amenable number.

80749453 is a deficient number, since it is larger than the sum of its proper divisors (1).

80749453 is an equidigital number, since it uses as much as digits as its factorization.

80749453 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120960, while the sum is 40.

The square root of 80749453 is about 8986.0699418600. The cubic root of 80749453 is about 432.2282976124.

The spelling of 80749453 in words is "eighty million, seven hundred forty-nine thousand, four hundred fifty-three".