329987253 has 4 divisors (see below), whose sum is σ = 439983008. Its totient is φ = 219991500.

The previous prime is 329987243. The next prime is 329987267. The reversal of 329987253 is 352789923.

It is a happy number.

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 not a de Polignac number, because 329987253 - 2⁸ = 329986997 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (329987213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54997873 + ... + 54997878.

It is an arithmetic number, because the mean of its divisors is an integer number (109995752).

Almost surely, 2^329987253 is an apocalyptic number.

It is an amenable number.

329987253 is a deficient number, since it is larger than the sum of its proper divisors (109995755).

329987253 is a wasteful number, since it uses less digits than its factorization.

329987253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109995754.

The product of its digits is 816480, while the sum is 48.

The square root of 329987253 is about 18165.5512715689. The cubic root of 329987253 is about 691.0334251931.

The spelling of 329987253 in words is "three hundred twenty-nine million, nine hundred eighty-seven thousand, two hundred fifty-three".