9942057772 has 12 divisors (see below), whose sum is σ = 17404586080. Its totient is φ = 4969318896.

The previous prime is 9942057767. The next prime is 9942057779. The reversal of 9942057772 is 2777502499.

It is a hoax number, since the sum of its digits (52) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (9942057779) 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, 414372 + ... + 437707.

Almost surely, 2^9942057772 is an apocalyptic number.

It is an amenable number.

9942057772 is a deficient number, since it is larger than the sum of its proper divisors (7462528308).

9942057772 is a wasteful number, since it uses less digits than its factorization.

9942057772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 855000 (or 854998 counting only the distinct ones).

The product of its (nonzero) digits is 2222640, while the sum is 52.

The square root of 9942057772 is about 99709.8679770463. The cubic root of 9942057772 is about 2150.2655357632.

The spelling of 9942057772 in words is "nine billion, nine hundred forty-two million, fifty-seven thousand, seven hundred seventy-two".