9972442 has 4 divisors (see below), whose sum is σ = 14958666. Its totient is φ = 4986220.

The previous prime is 9972439. The next prime is 9972449. The reversal of 9972442 is 2442799.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 7901721 + 2070721 = 2811^2 + 1439^2 .

It is not an unprimeable number, because it can be changed into a prime (9972449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2493109 + ... + 2493112.

Almost surely, 2^9972442 is an apocalyptic number.

9972442 is a deficient number, since it is larger than the sum of its proper divisors (4986224).

9972442 is a wasteful number, since it uses less digits than its factorization.

9972442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4986223.

The product of its digits is 36288, while the sum is 37.

The square root of 9972442 is about 3157.9173516734. The cubic root of 9972442 is about 215.2453805569.

The spelling of 9972442 in words is "nine million, nine hundred seventy-two thousand, four hundred forty-two".