7440679 has 4 divisors (see below), whose sum is σ = 7878384. Its totient is φ = 7002976.

The previous prime is 7440659. The next prime is 7440689. The reversal of 7440679 is 9760447.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9760447 = 1103 ⋅8849.

It is a cyclic number.

It is not a de Polignac number, because 7440679 - 2¹¹ = 7438631 is a prime.

It is a Duffinian number.

7440679 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7440619) 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 in 3 ways as a sum of consecutive naturals, for example, 218827 + ... + 218860.

It is an arithmetic number, because the mean of its divisors is an integer number (1969596).

Almost surely, 2^7440679 is an apocalyptic number.

7440679 is a deficient number, since it is larger than the sum of its proper divisors (437705).

7440679 is a wasteful number, since it uses less digits than its factorization.

7440679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437704.

The product of its (nonzero) digits is 42336, while the sum is 37.

The square root of 7440679 is about 2727.7608032964. The cubic root of 7440679 is about 195.2259401694.

The spelling of 7440679 in words is "seven million, four hundred forty thousand, six hundred seventy-nine".