39668253 has 4 divisors (see below), whose sum is σ = 52891008. Its totient is φ = 26445500.

The previous prime is 39668203. The next prime is 39668269. The reversal of 39668253 is 35286693.

39668253 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 39668253 - 2⁹ = 39667741 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39668203) 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 3 ways as a sum of consecutive naturals, for example, 6611373 + ... + 6611378.

It is an arithmetic number, because the mean of its divisors is an integer number (13222752).

Almost surely, 2^39668253 is an apocalyptic number.

It is an amenable number.

39668253 is a deficient number, since it is larger than the sum of its proper divisors (13222755).

39668253 is a wasteful number, since it uses less digits than its factorization.

39668253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13222754.

The product of its digits is 233280, while the sum is 42.

The square root of 39668253 is about 6298.2738111327. The cubic root of 39668253 is about 341.0470977794.

The spelling of 39668253 in words is "thirty-nine million, six hundred sixty-eight thousand, two hundred fifty-three".