239153821889 has 2 divisors, whose sum is σ = 239153821890. Its totient is φ = 239153821888.

The previous prime is 239153821873. The next prime is 239153821901. The reversal of 239153821889 is 988128351932.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 121979055025 + 117174766864 = 349255^2 + 342308^2 .

It is a cyclic number.

It is not a de Polignac number, because 239153821889 - 2⁴ = 239153821873 is a prime.

It is not a weakly prime, because it can be changed into another prime (239113821889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119576910944 + 119576910945.

It is an arithmetic number, because the mean of its divisors is an integer number (119576910945).

Almost surely, 2^239153821889 is an apocalyptic number.

It is an amenable number.

239153821889 is a deficient number, since it is larger than the sum of its proper divisors (1).

239153821889 is an equidigital number, since it uses as much as digits as its factorization.

239153821889 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7464960, while the sum is 59.

The spelling of 239153821889 in words is "two hundred thirty-nine billion, one hundred fifty-three million, eight hundred twenty-one thousand, eight hundred eighty-nine".