8912997261 has 48 divisors (see below), whose sum is σ = 15500534400. Its totient is φ = 4821151104.

The previous prime is 8912997259. The next prime is 8912997307. The reversal of 8912997261 is 1627992198.

8912997261 is a `hidden beast` number, since 8 + 91 + 299 + 7 + 261 = 666.

It is not a de Polignac number, because 8912997261 - 2¹ = 8912997259 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8912997198 and 8912997207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8912997221) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2043495 + ... + 2047851.

It is an arithmetic number, because the mean of its divisors is an integer number (322927800).

Almost surely, 2^8912997261 is an apocalyptic number.

It is an amenable number.

8912997261 is a deficient number, since it is larger than the sum of its proper divisors (6587537139).

8912997261 is a wasteful number, since it uses less digits than its factorization.

8912997261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6098 (or 6095 counting only the distinct ones).

The product of its digits is 979776, while the sum is 54.

The square root of 8912997261 is about 94408.6715349814. The cubic root of 8912997261 is about 2073.3594046934.

The spelling of 8912997261 in words is "eight billion, nine hundred twelve million, nine hundred ninety-seven thousand, two hundred sixty-one".