1199435994 has 24 divisors (see below), whose sum is σ = 2616225300. Its totient is φ = 397127808.

The previous prime is 1199435983. The next prime is 1199435999. The reversal of 1199435994 is 4995349911.

It is a happy number.

1199435994 is a `hidden beast` number, since 1 + 1 + 9 + 9 + 43 + 599 + 4 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1016780769 + 182655225 = 31887^2 + 13515^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1199435994.

It is not an unprimeable number, because it can be changed into a prime (1199435999) 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 in 11 ways as a sum of consecutive naturals, for example, 220927 + ... + 226290.

Almost surely, 2^1199435994 is an apocalyptic number.

1199435994 is an abundant number, since it is smaller than the sum of its proper divisors (1416789306).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1199435994 is a wasteful number, since it uses less digits than its factorization.

1199435994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 447374 (or 447371 counting only the distinct ones).

The product of its digits is 1574640, while the sum is 54.

The square root of 1199435994 is about 34632.8744692092. The cubic root of 1199435994 is about 1062.4920581459.

The spelling of 1199435994 in words is "one billion, one hundred ninety-nine million, four hundred thirty-five thousand, nine hundred ninety-four".