80909493 has 16 divisors (see below), whose sum is σ = 123417216. Its totient is φ = 46186560.

The previous prime is 80909471. The next prime is 80909497. The reversal of 80909493 is 39490908.

It is not a de Polignac number, because 80909493 - 2⁵ = 80909461 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80909497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35455 + ... + 37667.

It is an arithmetic number, because the mean of its divisors is an integer number (7713576).

Almost surely, 2^80909493 is an apocalyptic number.

It is an amenable number.

80909493 is a deficient number, since it is larger than the sum of its proper divisors (42507723).

80909493 is a wasteful number, since it uses less digits than its factorization.

80909493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3964.

The product of its (nonzero) digits is 69984, while the sum is 42.

The square root of 80909493 is about 8994.9704279670. The cubic root of 80909493 is about 432.5136583389.

The spelling of 80909493 in words is "eighty million, nine hundred nine thousand, four hundred ninety-three".