389887253 has 4 divisors (see below), whose sum is σ = 445585440. Its totient is φ = 334189068.

The previous prime is 389887229. The next prime is 389887261. The reversal of 389887253 is 352788983.

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, and also an emirpimes, since its reverse is a distinct semiprime: 352788983 = 317 ⋅1112899.

It is a cyclic number.

It is not a de Polignac number, because 389887253 - 2⁸ = 389886997 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 389887195 and 389887204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (389887273) 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, 27849083 + ... + 27849096.

It is an arithmetic number, because the mean of its divisors is an integer number (111396360).

Almost surely, 2^389887253 is an apocalyptic number.

It is an amenable number.

389887253 is a deficient number, since it is larger than the sum of its proper divisors (55698187).

389887253 is an equidigital number, since it uses as much as digits as its factorization.

389887253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55698186.

The product of its digits is 2903040, while the sum is 53.

The square root of 389887253 is about 19745.5628686548. The cubic root of 389887253 is about 730.5439449992.

The spelling of 389887253 in words is "three hundred eighty-nine million, eight hundred eighty-seven thousand, two hundred fifty-three".