9887333261 has 4 divisors (see below), whose sum is σ = 10647897372. Its totient is φ = 9126769152.

The previous prime is 9887333237. The next prime is 9887333279. The reversal of 9887333261 is 1623337889.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1623337889 = 37 ⋅43873997.

It can be written as a sum of positive squares in 2 ways, for example, as 6067475236 + 3819858025 = 77894^2 + 61805^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9887333261 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9887333231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 380282036 + ... + 380282061.

It is an arithmetic number, because the mean of its divisors is an integer number (2661974343).

Almost surely, 2^9887333261 is an apocalyptic number.

It is an amenable number.

9887333261 is a deficient number, since it is larger than the sum of its proper divisors (760564111).

9887333261 is a wasteful number, since it uses less digits than its factorization.

9887333261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 760564110.

The product of its digits is 1306368, while the sum is 50.

The square root of 9887333261 is about 99435.0705787450. The cubic root of 9887333261 is about 2146.3130074183.

The spelling of 9887333261 in words is "nine billion, eight hundred eighty-seven million, three hundred thirty-three thousand, two hundred sixty-one".