239383621 has 2 divisors, whose sum is σ = 239383622. Its totient is φ = 239383620.

The previous prime is 239383597. The next prime is 239383631. The reversal of 239383621 is 126383932.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 221861025 + 17522596 = 14895^2 + 4186^2 .

It is a cyclic number.

It is not a de Polignac number, because 239383621 - 2⁵ = 239383589 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (239383631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119691810 + 119691811.

It is an arithmetic number, because the mean of its divisors is an integer number (119691811).

Almost surely, 2^239383621 is an apocalyptic number.

It is an amenable number.

239383621 is a deficient number, since it is larger than the sum of its proper divisors (1).

239383621 is an equidigital number, since it uses as much as digits as its factorization.

239383621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 46656, while the sum is 37.

The square root of 239383621 is about 15472.0270488388. The cubic root of 239383621 is about 620.9140359673.

The spelling of 239383621 in words is "two hundred thirty-nine million, three hundred eighty-three thousand, six hundred twenty-one".