971972446 has 4 divisors (see below), whose sum is σ = 1457958672. Its totient is φ = 485986222.

The previous prime is 971972437. The next prime is 971972453. The reversal of 971972446 is 644279179.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 644279179 = 163 ⋅3952633.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 971972446.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 242993110 + ... + 242993113.

It is an arithmetic number, because the mean of its divisors is an integer number (364489668).

Almost surely, 2^971972446 is an apocalyptic number.

971972446 is a deficient number, since it is larger than the sum of its proper divisors (485986226).

971972446 is a wasteful number, since it uses less digits than its factorization.

971972446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 485986225.

The product of its digits is 762048, while the sum is 49.

The square root of 971972446 is about 31176.4726356270. The cubic root of 971972446 is about 990.5688143635.

The spelling of 971972446 in words is "nine hundred seventy-one million, nine hundred seventy-two thousand, four hundred forty-six".