7945946 has 4 divisors (see below), whose sum is σ = 11918922. Its totient is φ = 3972972.

The previous prime is 7945937. The next prime is 7945957. The reversal of 7945946 is 6495497.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6495497 = 83 ⋅78259.

It can be written as a sum of positive squares in only one way, i.e., 7155625 + 790321 = 2675^2 + 889^2 .

It is a junction number, because it is equal to n+sod(n) for n = 7945897 and 7945906.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1986485 + ... + 1986488.

Almost surely, 2^7945946 is an apocalyptic number.

7945946 is a deficient number, since it is larger than the sum of its proper divisors (3972976).

7945946 is a wasteful number, since it uses less digits than its factorization.

7945946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3972975.

The product of its digits is 272160, while the sum is 44.

The square root of 7945946 is about 2818.8554414868. The cubic root of 7945946 is about 199.5485316485.

The spelling of 7945946 in words is "seven million, nine hundred forty-five thousand, nine hundred forty-six".