1238408089 has 4 divisors (see below), whose sum is σ = 1239962724. Its totient is φ = 1236853456.

The previous prime is 1238408081. The next prime is 1238408131. The reversal of 1238408089 is 9808048321.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 671587225 + 566820864 = 25915^2 + 23808^2 .

It is a cyclic number.

It is not a de Polignac number, because 1238408089 - 2³ = 1238408081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1238408081) 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, 776122 + ... + 777715.

It is an arithmetic number, because the mean of its divisors is an integer number (309990681).

Almost surely, 2^1238408089 is an apocalyptic number.

It is an amenable number.

1238408089 is a deficient number, since it is larger than the sum of its proper divisors (1554635).

1238408089 is an equidigital number, since it uses as much as digits as its factorization.

1238408089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1554634.

The product of its (nonzero) digits is 110592, while the sum is 43.

The square root of 1238408089 is about 35191.0228467432. The cubic root of 1238408089 is about 1073.8771297536.

The spelling of 1238408089 in words is "one billion, two hundred thirty-eight million, four hundred eight thousand, eighty-nine".