7940473 has 2 divisors, whose sum is σ = 7940474. Its totient is φ = 7940472.

The previous prime is 7940467. The next prime is 7940483. The reversal of 7940473 is 3740497.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6190144 + 1750329 = 2488^2 + 1323^2 .

It is an emirp because it is prime and its reverse (3740497) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7940473 is a prime.

It is a super-2 number, since 2×7940473² = 126102222927458, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (7940483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3970236 + 3970237.

It is an arithmetic number, because the mean of its divisors is an integer number (3970237).

Almost surely, 2^7940473 is an apocalyptic number.

It is an amenable number.

7940473 is a deficient number, since it is larger than the sum of its proper divisors (1).

7940473 is an equidigital number, since it uses as much as digits as its factorization.

7940473 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 21168, while the sum is 34.

The square root of 7940473 is about 2817.8844901805. The cubic root of 7940473 is about 199.5027061858.

The spelling of 7940473 in words is "seven million, nine hundred forty thousand, four hundred seventy-three".