1244997027 has 16 divisors (see below), whose sum is σ = 1851463680. Its totient is φ = 826837416.

The previous prime is 1244997001. The next prime is 1244997029. The reversal of 1244997027 is 7207994421.

It is a happy number.

It is not a de Polignac number, because 1244997027 - 2⁷ = 1244996899 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (1244997029) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80563 + ... + 94764.

It is an arithmetic number, because the mean of its divisors is an integer number (115716480).

Almost surely, 2^1244997027 is an apocalyptic number.

1244997027 is a deficient number, since it is larger than the sum of its proper divisors (606466653).

1244997027 is a wasteful number, since it uses less digits than its factorization.

1244997027 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175599 (or 175593 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 45.

The square root of 1244997027 is about 35284.5153998181. The cubic root of 1244997027 is about 1075.7782795989.

The spelling of 1244997027 in words is "one billion, two hundred forty-four million, nine hundred ninety-seven thousand, twenty-seven".