253485389 has 4 divisors (see below), whose sum is σ = 253880256. Its totient is φ = 253090524.

The previous prime is 253485383. The next prime is 253485391. The reversal of 253485389 is 983584352.

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 a de Polignac number, because none of the positive numbers 2^k-253485389 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 (253485383) 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, 196469 + ... + 197754.

It is an arithmetic number, because the mean of its divisors is an integer number (63470064).

Almost surely, 2^253485389 is an apocalyptic number.

It is an amenable number.

253485389 is a deficient number, since it is larger than the sum of its proper divisors (394867).

253485389 is an equidigital number, since it uses as much as digits as its factorization.

253485389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394866.

The product of its digits is 1036800, while the sum is 47.

The square root of 253485389 is about 15921.2244818042. The cubic root of 253485389 is about 632.8745678274.

The spelling of 253485389 in words is "two hundred fifty-three million, four hundred eighty-five thousand, three hundred eighty-nine".