8961406977 has 4 divisors (see below), whose sum is σ = 11948542640. Its totient is φ = 5974271316.

The previous prime is 8961406963. The next prime is 8961407009. The reversal of 8961406977 is 7796041698.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 8961406977 - 2¹⁰ = 8961405953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8961406277) 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, 1493567827 + ... + 1493567832.

It is an arithmetic number, because the mean of its divisors is an integer number (2987135660).

Almost surely, 2^8961406977 is an apocalyptic number.

It is an amenable number.

8961406977 is a deficient number, since it is larger than the sum of its proper divisors (2987135663).

8961406977 is a wasteful number, since it uses less digits than its factorization.

8961406977 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2987135662.

The product of its (nonzero) digits is 4572288, while the sum is 57.

The square root of 8961406977 is about 94664.7081915959. The cubic root of 8961406977 is about 2077.1063511185.

The spelling of 8961406977 in words is "eight billion, nine hundred sixty-one million, four hundred six thousand, nine hundred seventy-seven".