87947441 has 2 divisors, whose sum is σ = 87947442. Its totient is φ = 87947440.

The previous prime is 87947417. The next prime is 87947449. The reversal of 87947441 is 14474978.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 82283041 + 5664400 = 9071^2 + 2380^2 .

It is a cyclic number.

It is not a de Polignac number, because 87947441 - 2¹⁴ = 87931057 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 87947392 and 87947401.

It is not a weakly prime, because it can be changed into another prime (87947449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43973720 + 43973721.

It is an arithmetic number, because the mean of its divisors is an integer number (43973721).

Almost surely, 2^87947441 is an apocalyptic number.

It is an amenable number.

87947441 is a deficient number, since it is larger than the sum of its proper divisors (1).

87947441 is an equidigital number, since it uses as much as digits as its factorization.

87947441 is an evil number, because the sum of its binary digits is even.

The product of its digits is 225792, while the sum is 44.

The square root of 87947441 is about 9378.0296971166. The cubic root of 87947441 is about 444.7074473194.

It can be divided in two parts, 87947 and 441, that added together give a palindrome (88388).

The spelling of 87947441 in words is "eighty-seven million, nine hundred forty-seven thousand, four hundred forty-one".