239628427 has 2 divisors, whose sum is σ = 239628428. Its totient is φ = 239628426.

The previous prime is 239628401. The next prime is 239628439. The reversal of 239628427 is 724826932.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 239628427 - 2²⁷ = 105410699 is a prime.

It is not a weakly prime, because it can be changed into another prime (239628457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119814213 + 119814214.

It is an arithmetic number, because the mean of its divisors is an integer number (119814214).

Almost surely, 2^239628427 is an apocalyptic number.

239628427 is a deficient number, since it is larger than the sum of its proper divisors (1).

239628427 is an equidigital number, since it uses as much as digits as its factorization.

239628427 is an evil number, because the sum of its binary digits is even.

The product of its digits is 290304, while the sum is 43.

The square root of 239628427 is about 15479.9362724786. The cubic root of 239628427 is about 621.1256233972.

The spelling of 239628427 in words is "two hundred thirty-nine million, six hundred twenty-eight thousand, four hundred twenty-seven".