87774444 has 18 divisors (see below), whose sum is σ = 221874380. Its totient is φ = 29258136.

The previous prime is 87774419. The next prime is 87774457. The reversal of 87774444 is 44447778.

It is a tau number, because it is divible by the number of its divisors (18).

It is a nialpdrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 87774444.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1219054 + ... + 1219125.

Almost surely, 2^87774444 is an apocalyptic number.

It is an amenable number.

87774444 is an abundant number, since it is smaller than the sum of its proper divisors (134099936).

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

87774444 is a wasteful number, since it uses less digits than its factorization.

87774444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2438189 (or 2438184 counting only the distinct ones).

The product of its digits is 702464, while the sum is 45.

The square root of 87774444 is about 9368.8016309451. The cubic root of 87774444 is about 444.4156686832.

The spelling of 87774444 in words is "eighty-seven million, seven hundred seventy-four thousand, four hundred forty-four".