1213444199 has 8 divisors (see below), whose sum is σ = 1336865040. Its totient is φ = 1092208000.

The previous prime is 1213444181. The next prime is 1213444237. The reversal of 1213444199 is 9914443121.

It is a happy number.

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 1213444199 - 2¹² = 1213440103 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 (1213440199) 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, 544994 + ... + 547215.

It is an arithmetic number, because the mean of its divisors is an integer number (167108130).

Almost surely, 2^1213444199 is an apocalyptic number.

1213444199 is a deficient number, since it is larger than the sum of its proper divisors (123420841).

1213444199 is a wasteful number, since it uses less digits than its factorization.

1213444199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1092321.

The product of its digits is 31104, while the sum is 38.

The square root of 1213444199 is about 34834.5259620394. The cubic root of 1213444199 is about 1066.6123385199.

The spelling of 1213444199 in words is "one billion, two hundred thirteen million, four hundred forty-four thousand, one hundred ninety-nine".