2006239987 has 2 divisors, whose sum is σ = 2006239988. Its totient is φ = 2006239986.

The previous prime is 2006239967. The next prime is 2006239993. The reversal of 2006239987 is 7899326002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2006239987 - 2²³ = 1997851379 is a prime.

It is not a weakly prime, because it can be changed into another prime (2006239967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1003119993 + 1003119994.

It is an arithmetic number, because the mean of its divisors is an integer number (1003119994).

Almost surely, 2^2006239987 is an apocalyptic number.

2006239987 is a deficient number, since it is larger than the sum of its proper divisors (1).

2006239987 is an equidigital number, since it uses as much as digits as its factorization.

2006239987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 326592, while the sum is 46.

The square root of 2006239987 is about 44791.0703935505. The cubic root of 2006239987 is about 1261.2300046892.

The spelling of 2006239987 in words is "two billion, six million, two hundred thirty-nine thousand, nine hundred eighty-seven".