2238389897 has 4 divisors (see below), whose sum is σ = 2290445520. Its totient is φ = 2186334276.

The previous prime is 2238389893. The next prime is 2238389903. The reversal of 2238389897 is 7989838322.

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 2238389897 - 2² = 2238389893 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2238389891) 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, 26027747 + ... + 26027832.

It is an arithmetic number, because the mean of its divisors is an integer number (572611380).

Almost surely, 2^2238389897 is an apocalyptic number.

It is an amenable number.

2238389897 is a deficient number, since it is larger than the sum of its proper divisors (52055623).

2238389897 is an equidigital number, since it uses as much as digits as its factorization.

2238389897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52055622.

The product of its digits is 10450944, while the sum is 59.

The square root of 2238389897 is about 47311.6253895382. The cubic root of 2238389897 is about 1308.1129516891.

The spelling of 2238389897 in words is "two billion, two hundred thirty-eight million, three hundred eighty-nine thousand, eight hundred ninety-seven".