1244349971 has 4 divisors (see below), whose sum is σ = 1247320200. Its totient is φ = 1241379744.

The previous prime is 1244349961. The next prime is 1244349991. The reversal of 1244349971 is 1799434421.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1244349971 - 2⁶ = 1244349907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1244349961) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1484486 + ... + 1485323.

It is an arithmetic number, because the mean of its divisors is an integer number (311830050).

Almost surely, 2^1244349971 is an apocalyptic number.

1244349971 is a deficient number, since it is larger than the sum of its proper divisors (2970229).

1244349971 is an equidigital number, since it uses as much as digits as its factorization.

1244349971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2970228.

The product of its digits is 217728, while the sum is 44.

The square root of 1244349971 is about 35275.3450869017. The cubic root of 1244349971 is about 1075.5918777035.

The spelling of 1244349971 in words is "one billion, two hundred forty-four million, three hundred forty-nine thousand, nine hundred seventy-one".