87981411 has 24 divisors (see below), whose sum is σ = 138124224. Its totient is φ = 49662480.

The previous prime is 87981407. The next prime is 87981433. The reversal of 87981411 is 11418978.

It is not a de Polignac number, because 87981411 - 2² = 87981407 is a prime.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 87981411.

It is not an unprimeable number, because it can be changed into a prime (87981401) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 8596 + ... + 15806.

It is an arithmetic number, because the mean of its divisors is an integer number (5755176).

Almost surely, 2^87981411 is an apocalyptic number.

87981411 is a deficient number, since it is larger than the sum of its proper divisors (50142813).

87981411 is a wasteful number, since it uses less digits than its factorization.

87981411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7311 (or 7304 counting only the distinct ones).

The product of its digits is 16128, while the sum is 39.

The square root of 87981411 is about 9379.8406702886. The cubic root of 87981411 is about 444.7646965402.

The spelling of 87981411 in words is "eighty-seven million, nine hundred eighty-one thousand, four hundred eleven".