7972946 has 4 divisors (see below), whose sum is σ = 11959422. Its totient is φ = 3986472.

The previous prime is 7972907. The next prime is 7972957. The reversal of 7972946 is 6492797.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6492797 = 37 ⋅175481.

It can be written as a sum of positive squares in only one way, i.e., 6817321 + 1155625 = 2611^2 + 1075^2 .

It is a junction number, because it is equal to n+sod(n) for n = 7972897 and 7972906.

It is an unprimeable number.

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, 1993235 + ... + 1993238.

Almost surely, 2^7972946 is an apocalyptic number.

7972946 is a deficient number, since it is larger than the sum of its proper divisors (3986476).

7972946 is a wasteful number, since it uses less digits than its factorization.

7972946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3986475.

The product of its digits is 190512, while the sum is 44.

The square root of 7972946 is about 2823.6405578614. The cubic root of 7972946 is about 199.7742953829.

The spelling of 7972946 in words is "seven million, nine hundred seventy-two thousand, nine hundred forty-six".