87404406 has 8 divisors (see below), whose sum is σ = 174808824. Its totient is φ = 29134800.

The previous prime is 87404377. The next prime is 87404417. The reversal of 87404406 is 60440478.

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

87404406 is an admirable number.

It is a super-3 number, since 3×87404406³ (a number of 25 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7283695 + ... + 7283706.

It is an arithmetic number, because the mean of its divisors is an integer number (21851103).

Almost surely, 2^87404406 is an apocalyptic number.

87404406 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

87404406 is a wasteful number, since it uses less digits than its factorization.

87404406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14567406.

The product of its (nonzero) digits is 21504, while the sum is 33.

The square root of 87404406 is about 9349.0323563458. The cubic root of 87404406 is about 443.7902690164.

The spelling of 87404406 in words is "eighty-seven million, four hundred four thousand, four hundred six".