7864946 has 4 divisors (see below), whose sum is σ = 11797422. Its totient is φ = 3932472.

The previous prime is 7864939. The next prime is 7864949. The reversal of 7864946 is 6494687.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6494687 = 41 ⋅158407.

It can be written as a sum of positive squares in only one way, i.e., 6630625 + 1234321 = 2575^2 + 1111^2 .

It is a d-powerful number, because it can be written as 7⁸ + 8⁷ + 6⁴ + 4³ + 9² + 4⁴ + 6⁴ .

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 7864897 and 7864906.

It is not an unprimeable number, because it can be changed into a prime (7864949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1966235 + ... + 1966238.

Almost surely, 2^7864946 is an apocalyptic number.

7864946 is a deficient number, since it is larger than the sum of its proper divisors (3932476).

7864946 is a wasteful number, since it uses less digits than its factorization.

7864946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3932475.

The product of its digits is 290304, while the sum is 44.

The square root of 7864946 is about 2804.4511049401. The cubic root of 7864946 is about 198.8681567372.

The spelling of 7864946 in words is "seven million, eight hundred sixty-four thousand, nine hundred forty-six".