9947964577 has 16 divisors (see below), whose sum is σ = 10937900160. Its totient is φ = 9005496192.

The previous prime is 9947964553. The next prime is 9947964583. The reversal of 9947964577 is 7754697499.

It is a cyclic number.

It is not a de Polignac number, because 9947964577 - 2¹¹ = 9947962529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9947964277) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 440403 + ... + 462439.

It is an arithmetic number, because the mean of its divisors is an integer number (683618760).

Almost surely, 2^9947964577 is an apocalyptic number.

It is an amenable number.

9947964577 is a deficient number, since it is larger than the sum of its proper divisors (989935583).

9947964577 is a wasteful number, since it uses less digits than its factorization.

9947964577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23112.

The product of its digits is 120022560, while the sum is 67.

The square root of 9947964577 is about 99739.4835408726. The cubic root of 9947964577 is about 2150.6912921804.

The spelling of 9947964577 in words is "nine billion, nine hundred forty-seven million, nine hundred sixty-four thousand, five hundred seventy-seven".