972394166 has 4 divisors (see below), whose sum is σ = 1458591252. Its totient is φ = 486197082.

The previous prime is 972394147. The next prime is 972394183. The reversal of 972394166 is 661493279.

It is a happy number.

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 972394166.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 243098540 + ... + 243098543.

It is an arithmetic number, because the mean of its divisors is an integer number (364647813).

Almost surely, 2^972394166 is an apocalyptic number.

972394166 is a deficient number, since it is larger than the sum of its proper divisors (486197086).

972394166 is a wasteful number, since it uses less digits than its factorization.

972394166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 486197085.

The product of its digits is 489888, while the sum is 47.

The square root of 972394166 is about 31183.2353356736. The cubic root of 972394166 is about 990.7120565168.

The spelling of 972394166 in words is "nine hundred seventy-two million, three hundred ninety-four thousand, one hundred sixty-six".