234087389 has 2 divisors, whose sum is σ = 234087390. Its totient is φ = 234087388.

The previous prime is 234087383. The next prime is 234087443. The reversal of 234087389 is 983780432.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 184144900 + 49942489 = 13570^2 + 7067^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-234087389 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (234087383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 117043694 + 117043695.

It is an arithmetic number, because the mean of its divisors is an integer number (117043695).

Almost surely, 2^234087389 is an apocalyptic number.

It is an amenable number.

234087389 is a deficient number, since it is larger than the sum of its proper divisors (1).

234087389 is an equidigital number, since it uses as much as digits as its factorization.

234087389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 290304, while the sum is 44.

The square root of 234087389 is about 15299.9146729647. The cubic root of 234087389 is about 616.3007163392.

The spelling of 234087389 in words is "two hundred thirty-four million, eighty-seven thousand, three hundred eighty-nine".