7940523 has 4 divisors (see below), whose sum is σ = 10587368. Its totient is φ = 5293680.

The previous prime is 7940521. The next prime is 7940539. The reversal of 7940523 is 3250497.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 7940523 - 2¹ = 7940521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7940521) 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 in 3 ways as a sum of consecutive naturals, for example, 1323418 + ... + 1323423.

It is an arithmetic number, because the mean of its divisors is an integer number (2646842).

Almost surely, 2^7940523 is an apocalyptic number.

7940523 is a deficient number, since it is larger than the sum of its proper divisors (2646845).

7940523 is a wasteful number, since it uses less digits than its factorization.

7940523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2646844.

The product of its (nonzero) digits is 7560, while the sum is 30.

The square root of 7940523 is about 2817.8933620703. The cubic root of 7940523 is about 199.5031249314.

The spelling of 7940523 in words is "seven million, nine hundred forty thousand, five hundred twenty-three".