80478091 has 6 divisors (see below), whose sum is σ = 84937092. Its totient is φ = 76242060.

The previous prime is 80478067. The next prime is 80478131. The reversal of 80478091 is 19087408.

It is not a de Polignac number, because 80478091 - 2¹¹ = 80476043 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 80478091.

It is not an unprimeable number, because it can be changed into a prime (80478001) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 111105 + ... + 111826.

It is an arithmetic number, because the mean of its divisors is an integer number (14156182).

Almost surely, 2^80478091 is an apocalyptic number.

80478091 is a deficient number, since it is larger than the sum of its proper divisors (4459001).

80478091 is a wasteful number, since it uses less digits than its factorization.

80478091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222969 (or 222950 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 37.

The square root of 80478091 is about 8970.9581985427. The cubic root of 80478091 is about 431.7435803246.

The spelling of 80478091 in words is "eighty million, four hundred seventy-eight thousand, ninety-one".