1212419993 has 8 divisors (see below), whose sum is σ = 1224263040. Its totient is φ = 1200633840.

The previous prime is 1212419981. The next prime is 1212420019. The reversal of 1212419993 is 3999142121.

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 1212419993 - 2⁴ = 1212419977 is a prime.

It is a super-2 number, since 2×1212419993² = 2939924478852240098, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1212419993.

It is not an unprimeable number, because it can be changed into a prime (1212419093) 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, 29246 + ... + 57272.

It is an arithmetic number, because the mean of its divisors is an integer number (153032880).

Almost surely, 2^1212419993 is an apocalyptic number.

It is an amenable number.

1212419993 is a deficient number, since it is larger than the sum of its proper divisors (11843047).

1212419993 is a wasteful number, since it uses less digits than its factorization.

1212419993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28447.

The product of its digits is 34992, while the sum is 41.

The square root of 1212419993 is about 34819.8218404403. The cubic root of 1212419993 is about 1066.3121631302.

The spelling of 1212419993 in words is "one billion, two hundred twelve million, four hundred nineteen thousand, nine hundred ninety-three".