239054987 has 2 divisors, whose sum is σ = 239054988. Its totient is φ = 239054986.

The previous prime is 239054983. The next prime is 239055029. The reversal of 239054987 is 789450932.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 239054987 - 2² = 239054983 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (239054983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119527493 + 119527494.

It is an arithmetic number, because the mean of its divisors is an integer number (119527494).

Almost surely, 2^239054987 is an apocalyptic number.

239054987 is a deficient number, since it is larger than the sum of its proper divisors (1).

239054987 is an equidigital number, since it uses as much as digits as its factorization.

239054987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 544320, while the sum is 47.

The square root of 239054987 is about 15461.4031381372. The cubic root of 239054987 is about 620.6297685212.

The spelling of 239054987 in words is "two hundred thirty-nine million, fifty-four thousand, nine hundred eighty-seven".