7940253 has 8 divisors (see below), whose sum is σ = 10600128. Its totient is φ = 5286944.

The previous prime is 7940249. The next prime is 7940269. The reversal of 7940253 is 3520497.

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 7940253 - 2² = 7940249 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 7940253.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7940243) 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, 3376 + ... + 5222.

It is an arithmetic number, because the mean of its divisors is an integer number (1325016).

Almost surely, 2^7940253 is an apocalyptic number.

It is an amenable number.

7940253 is a deficient number, since it is larger than the sum of its proper divisors (2659875).

7940253 is a wasteful number, since it uses less digits than its factorization.

7940253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3283.

The product of its (nonzero) digits is 7560, while the sum is 30.

The square root of 7940253 is about 2817.8454535336. The cubic root of 7940253 is about 199.5008636843.

The spelling of 7940253 in words is "seven million, nine hundred forty thousand, two hundred fifty-three".