1272844993 has 8 divisors (see below), whose sum is σ = 1468026560. Its totient is φ = 1081000080.

The previous prime is 1272844973. The next prime is 1272844999. The reversal of 1272844993 is 3994482721.

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 1272844993 - 2¹⁷ = 1272713921 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1272844999) 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, 833343 + ... + 834868.

It is an arithmetic number, because the mean of its divisors is an integer number (183503320).

Almost surely, 2^1272844993 is an apocalyptic number.

It is an amenable number.

1272844993 is a deficient number, since it is larger than the sum of its proper divisors (195181567).

1272844993 is a wasteful number, since it uses less digits than its factorization.

1272844993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1668327.

The product of its digits is 870912, while the sum is 49.

The square root of 1272844993 is about 35676.9532471594. The cubic root of 1272844993 is about 1083.7401739368.

The spelling of 1272844993 in words is "one billion, two hundred seventy-two million, eight hundred forty-four thousand, nine hundred ninety-three".