119999987 has 2 divisors, whose sum is σ = 119999988. Its totient is φ = 119999986.

The previous prime is 119999983. The next prime is 120000007. The reversal of 119999987 is 789999911.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 119999987 - 2² = 119999983 is a prime.

It is not a weakly prime, because it can be changed into another prime (119999983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 59999993 + 59999994.

It is an arithmetic number, because the mean of its divisors is an integer number (59999994).

Almost surely, 2^119999987 is an apocalyptic number.

119999987 is a deficient number, since it is larger than the sum of its proper divisors (1).

119999987 is an equidigital number, since it uses as much as digits as its factorization.

119999987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3306744, while the sum is 62.

The square root of 119999987 is about 10954.4505567372. The cubic root of 119999987 is about 493.2423970546.

The spelling of 119999987 in words is "one hundred nineteen million, nine hundred ninety-nine thousand, nine hundred eighty-seven".