80087405 has 4 divisors (see below), whose sum is σ = 96104892. Its totient is φ = 64069920.

The previous prime is 80087393. The next prime is 80087407. The reversal of 80087405 is 50478008.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 25593481 + 54493924 = 5059^2 + 7382^2 .

It is not a de Polignac number, because 80087405 - 2⁸ = 80087149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80087407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8008736 + ... + 8008745.

It is an arithmetic number, because the mean of its divisors is an integer number (24026223).

Almost surely, 2^80087405 is an apocalyptic number.

It is an amenable number.

80087405 is a deficient number, since it is larger than the sum of its proper divisors (16017487).

80087405 is a wasteful number, since it uses less digits than its factorization.

80087405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16017486.

The product of its (nonzero) digits is 8960, while the sum is 32.

The square root of 80087405 is about 8949.1566641779. The cubic root of 80087405 is about 431.0438045281.

The spelling of 80087405 in words is "eighty million, eighty-seven thousand, four hundred five".