253791389 has 8 divisors (see below), whose sum is σ = 262161408. Its totient is φ = 245432880.

The previous prime is 253791367. The next prime is 253791427. The reversal of 253791389 is 983197352.

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 253791389 - 2²⁰ = 252742813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253791089) 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, 85244 + ... + 88170.

It is an arithmetic number, because the mean of its divisors is an integer number (32770176).

Almost surely, 2^253791389 is an apocalyptic number.

It is an amenable number.

253791389 is a deficient number, since it is larger than the sum of its proper divisors (8370019).

253791389 is a wasteful number, since it uses less digits than its factorization.

253791389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5755.

The product of its digits is 408240, while the sum is 47.

The square root of 253791389 is about 15930.8313970113. The cubic root of 253791389 is about 633.1291278555.

The spelling of 253791389 in words is "two hundred fifty-three million, seven hundred ninety-one thousand, three hundred eighty-nine".