9972938 has 8 divisors (see below), whose sum is σ = 15609888. Its totient is φ = 4769644.

The previous prime is 9972913. The next prime is 9972973. The reversal of 9972938 is 8392799.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 9972892 and 9972901.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 108356 + ... + 108447.

It is an arithmetic number, because the mean of its divisors is an integer number (1951236).

Almost surely, 2^9972938 is an apocalyptic number.

9972938 is a deficient number, since it is larger than the sum of its proper divisors (5636950).

9972938 is a wasteful number, since it uses less digits than its factorization.

9972938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216828.

The product of its digits is 244944, while the sum is 47.

The square root of 9972938 is about 3157.9958834679. The cubic root of 9972938 is about 215.2489490556.

It can be divided in two parts, 99 and 72938, that added together give a palindrome (73037).

The spelling of 9972938 in words is "nine million, nine hundred seventy-two thousand, nine hundred thirty-eight".