9947690742 has 32 divisors (see below), whose sum is σ = 21707642880. Its totient is φ = 3013953120.

The previous prime is 9947690741. The next prime is 9947690861. The reversal of 9947690742 is 2470967499.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9947690741) 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, 672684 + ... + 687312.

It is an arithmetic number, because the mean of its divisors is an integer number (678363840).

Almost surely, 2^9947690742 is an apocalyptic number.

9947690742 is an abundant number, since it is smaller than the sum of its proper divisors (11759952138).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

9947690742 is a wasteful number, since it uses less digits than its factorization.

9947690742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24948.

The product of its (nonzero) digits is 6858432, while the sum is 57.

The square root of 9947690742 is about 99738.1107801827. The cubic root of 9947690742 is about 2150.6715581618.

The spelling of 9947690742 in words is "nine billion, nine hundred forty-seven million, six hundred ninety thousand, seven hundred forty-two".