1200999983 has 8 divisors (see below), whose sum is σ = 1235760000. Its totient is φ = 1166361120.

The previous prime is 1200999967. The next prime is 1201000007. The reversal of 1200999983 is 3899990021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1200999983 - 2⁴ = 1200999967 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 (1200999913) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9983 + ... + 50016.

It is an arithmetic number, because the mean of its divisors is an integer number (154470000).

Almost surely, 2^1200999983 is an apocalyptic number.

1200999983 is a deficient number, since it is larger than the sum of its proper divisors (34760017).

1200999983 is an equidigital number, since it uses as much as digits as its factorization.

1200999983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60577.

The product of its (nonzero) digits is 314928, while the sum is 50.

The square root of 1200999983 is about 34655.4466570552. The cubic root of 1200999983 is about 1062.9536651459.

The spelling of 1200999983 in words is "one billion, two hundred million, nine hundred ninety-nine thousand, nine hundred eighty-three".