9945772 has 6 divisors (see below), whose sum is σ = 17405108. Its totient is φ = 4972884.

The previous prime is 9945743. The next prime is 9945779. The reversal of 9945772 is 2775499.

9945772 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (9945779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1243218 + ... + 1243225.

Almost surely, 2^9945772 is an apocalyptic number.

It is an amenable number.

9945772 is a deficient number, since it is larger than the sum of its proper divisors (7459336).

9945772 is a wasteful number, since it uses less digits than its factorization.

9945772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2486447 (or 2486445 counting only the distinct ones).

The product of its digits is 158760, while the sum is 43.

The square root of 9945772 is about 3153.6918048535. The cubic root of 9945772 is about 215.0533273164.

The spelling of 9945772 in words is "nine million, nine hundred forty-five thousand, seven hundred seventy-two".