7439423 has 2 divisors, whose sum is σ = 7439424. Its totient is φ = 7439422.

The previous prime is 7439417. The next prime is 7439449. The reversal of 7439423 is 3249347.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7439423 - 2⁴ = 7439407 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7439423.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7439023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3719711 + 3719712.

It is an arithmetic number, because the mean of its divisors is an integer number (3719712).

Almost surely, 2^7439423 is an apocalyptic number.

7439423 is a deficient number, since it is larger than the sum of its proper divisors (1).

7439423 is an equidigital number, since it uses as much as digits as its factorization.

7439423 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18144, while the sum is 32.

The square root of 7439423 is about 2727.5305681147. The cubic root of 7439423 is about 195.2149547213.

The spelling of 7439423 in words is "seven million, four hundred thirty-nine thousand, four hundred twenty-three".