7972709 has 8 divisors (see below), whose sum is σ = 8343000. Its totient is φ = 7608832.

The previous prime is 7972693. The next prime is 7972733. The reversal of 7972709 is 9072797.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1747684 + 6225025 = 1322^2 + 2495^2 .

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 7972709 - 2⁴ = 7972693 is a prime.

It is a super-3 number, since 3×7972709³ (a number of 22 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7972739) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1037 + ... + 4125.

It is an arithmetic number, because the mean of its divisors is an integer number (1042875).

Almost surely, 2^7972709 is an apocalyptic number.

It is an amenable number.

7972709 is a deficient number, since it is larger than the sum of its proper divisors (370291).

7972709 is a wasteful number, since it uses less digits than its factorization.

7972709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3207.

The product of its (nonzero) digits is 55566, while the sum is 41.

The square root of 7972709 is about 2823.5985904516. The cubic root of 7972709 is about 199.7723158981.

The spelling of 7972709 in words is "seven million, nine hundred seventy-two thousand, seven hundred nine".