9731372906 has 4 divisors (see below), whose sum is σ = 14597059362. Its totient is φ = 4865686452.

The previous prime is 9731372897. The next prime is 9731372921. The reversal of 9731372906 is 6092731379.

It is a happy number.

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., 6554359681 + 3177013225 = 80959^2 + 56365^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2432843225 + ... + 2432843228.

Almost surely, 2^9731372906 is an apocalyptic number.

9731372906 is a deficient number, since it is larger than the sum of its proper divisors (4865686456).

9731372906 is a wasteful number, since it uses less digits than its factorization.

9731372906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4865686455.

The product of its (nonzero) digits is 428652, while the sum is 47.

The square root of 9731372906 is about 98647.7212407869. The cubic root of 9731372906 is about 2134.9680083398.

The spelling of 9731372906 in words is "nine billion, seven hundred thirty-one million, three hundred seventy-two thousand, nine hundred six".