159029987 has 2 divisors, whose sum is σ = 159029988. Its totient is φ = 159029986.

The previous prime is 159029947. The next prime is 159029993. The reversal of 159029987 is 789920951.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 159029987 - 2¹⁶ = 158964451 is a prime.

It is not a weakly prime, because it can be changed into another prime (159029947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 79514993 + 79514994.

It is an arithmetic number, because the mean of its divisors is an integer number (79514994).

Almost surely, 2^159029987 is an apocalyptic number.

159029987 is a deficient number, since it is larger than the sum of its proper divisors (1).

159029987 is an equidigital number, since it uses as much as digits as its factorization.

159029987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 408240, while the sum is 50.

The square root of 159029987 is about 12610.7092187553. The cubic root of 159029987 is about 541.7842069288.

The spelling of 159029987 in words is "one hundred fifty-nine million, twenty-nine thousand, nine hundred eighty-seven".