7940739 has 8 divisors (see below), whose sum is σ = 10616832. Its totient is φ = 5279240.

The previous prime is 7940719. The next prime is 7940747. The reversal of 7940739 is 9370497.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7940739 - 2⁵ = 7940707 is a prime.

It is a super-2 number, since 2×7940739² = 126110671732242, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7940697 and 7940706.

It is not an unprimeable number, because it can be changed into a prime (7940719) 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 7 ways as a sum of consecutive naturals, for example, 2307 + ... + 4604.

It is an arithmetic number, because the mean of its divisors is an integer number (1327104).

Almost surely, 2^7940739 is an apocalyptic number.

7940739 is a deficient number, since it is larger than the sum of its proper divisors (2676093).

7940739 is a wasteful number, since it uses less digits than its factorization.

7940739 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7297.

The product of its (nonzero) digits is 47628, while the sum is 39.

The square root of 7940739 is about 2817.9316883133. The cubic root of 7940739 is about 199.5049338922.

The spelling of 7940739 in words is "seven million, nine hundred forty thousand, seven hundred thirty-nine".