80809478 has 8 divisors (see below), whose sum is σ = 121363272. Its totient is φ = 40355056.

The previous prime is 80809459. The next prime is 80809493. The reversal of 80809478 is 87490808.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22775 + ... + 26082.

It is an arithmetic number, because the mean of its divisors is an integer number (15170409).

Almost surely, 2^80809478 is an apocalyptic number.

80809478 is a deficient number, since it is larger than the sum of its proper divisors (40553794).

80809478 is a wasteful number, since it uses less digits than its factorization.

80809478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49686.

The product of its (nonzero) digits is 129024, while the sum is 44.

The square root of 80809478 is about 8989.4092130685. The cubic root of 80809478 is about 432.3353698655.

The spelling of 80809478 in words is "eighty million, eight hundred nine thousand, four hundred seventy-eight".