7940293 has 2 divisors, whose sum is σ = 7940294. Its totient is φ = 7940292.

The previous prime is 7940269. The next prime is 7940327. The reversal of 7940293 is 3920497.

It is an a-pointer prime, because the next prime (7940327) can be obtained adding 7940293 to its sum of digits (34).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4008004 + 3932289 = 2002^2 + 1983^2 .

It is a cyclic number.

It is not a de Polignac number, because 7940293 - 2⁹ = 7939781 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7940243) by changing a digit.

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, 3970146 + 3970147.

It is an arithmetic number, because the mean of its divisors is an integer number (3970147).

Almost surely, 2^7940293 is an apocalyptic number.

It is an amenable number.

7940293 is a deficient number, since it is larger than the sum of its proper divisors (1).

7940293 is an equidigital number, since it uses as much as digits as its factorization.

7940293 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13608, while the sum is 34.

The square root of 7940293 is about 2817.8525511460. The cubic root of 7940293 is about 199.5011986871.

Multiplying 7940293 by its sum of digits (34), we get a palindrome (269969962).

The spelling of 7940293 in words is "seven million, nine hundred forty thousand, two hundred ninety-three".