1200099959 has 2 divisors, whose sum is σ = 1200099960. Its totient is φ = 1200099958.

The previous prime is 1200099937. The next prime is 1200099961. The reversal of 1200099959 is 9599900021.

It is a strong prime.

It is an emirp because it is prime and its reverse (9599900021) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1200099959 - 2²⁴ = 1183322743 is a prime.

Together with 1200099961, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1200099259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600049979 + 600049980.

It is an arithmetic number, because the mean of its divisors is an integer number (600049980).

Almost surely, 2^1200099959 is an apocalyptic number.

1200099959 is a deficient number, since it is larger than the sum of its proper divisors (1).

1200099959 is an equidigital number, since it uses as much as digits as its factorization.

1200099959 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 65610, while the sum is 44.

The square root of 1200099959 is about 34642.4589052221. The cubic root of 1200099959 is about 1062.6880745545.

The spelling of 1200099959 in words is "one billion, two hundred million, ninety-nine thousand, nine hundred fifty-nine".