7944253 has 8 divisors (see below), whose sum is σ = 8444088. Its totient is φ = 7448064.

The previous prime is 7944241. The next prime is 7944259. The reversal of 7944253 is 3524497.

It can be written as a sum of positive squares in 4 ways, for example, as 1194649 + 6749604 = 1093^2 + 2598^2 .

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 7944253 - 2⁵ = 7944221 is a prime.

It is a super-2 number, since 2×7944253² = 126222311456018, which contains 22 as substring.

It is a Duffinian number.

7944253 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7944259) 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 7 ways as a sum of consecutive naturals, for example, 4575 + ... + 6067.

It is an arithmetic number, because the mean of its divisors is an integer number (1055511).

Almost surely, 2^7944253 is an apocalyptic number.

It is an amenable number.

7944253 is a deficient number, since it is larger than the sum of its proper divisors (499835).

7944253 is a wasteful number, since it uses less digits than its factorization.

7944253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1823.

The product of its digits is 30240, while the sum is 34.

The square root of 7944253 is about 2818.5551263014. Note that the first 3 decimals coincide. The cubic root of 7944253 is about 199.5343583975.

The spelling of 7944253 in words is "seven million, nine hundred forty-four thousand, two hundred fifty-three".