1200330399 has 4 divisors (see below), whose sum is σ = 1600440536. Its totient is φ = 800220264.

The previous prime is 1200330353. The next prime is 1200330401. The reversal of 1200330399 is 9930330021.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 1200330399 - 2⁹ = 1200329887 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200330319) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 200055064 + ... + 200055069.

It is an arithmetic number, because the mean of its divisors is an integer number (400110134).

Almost surely, 2^1200330399 is an apocalyptic number.

1200330399 is a deficient number, since it is larger than the sum of its proper divisors (400110137).

1200330399 is an equidigital number, since it uses as much as digits as its factorization.

1200330399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 400110136.

The product of its (nonzero) digits is 4374, while the sum is 30.

The square root of 1200330399 is about 34645.7847219543. The cubic root of 1200330399 is about 1062.7560883799.

The spelling of 1200330399 in words is "one billion, two hundred million, three hundred thirty thousand, three hundred ninety-nine".