87776441 has 12 divisors (see below), whose sum is σ = 93056628. Its totient is φ = 82773504.

The previous prime is 87776383. The next prime is 87776443. The reversal of 87776441 is 14467778.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 65545216 + 22231225 = 8096^2 + 4715^2 .

It is a de Polignac number, because none of the positive numbers 2^k-87776441 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 87776392 and 87776401.

It is not an unprimeable number, because it can be changed into a prime (87776443) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37481 + ... + 39753.

It is an arithmetic number, because the mean of its divisors is an integer number (7754719).

Almost surely, 2^87776441 is an apocalyptic number.

It is an amenable number.

87776441 is a deficient number, since it is larger than the sum of its proper divisors (5280187).

87776441 is a wasteful number, since it uses less digits than its factorization.

87776441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2392 (or 2369 counting only the distinct ones).

The product of its digits is 263424, while the sum is 44.

The square root of 87776441 is about 9368.9082074701. The cubic root of 87776441 is about 444.4190390316.

The spelling of 87776441 in words is "eighty-seven million, seven hundred seventy-six thousand, four hundred forty-one".