1244701389 has 4 divisors (see below), whose sum is σ = 1659601856. Its totient is φ = 829800924.

The previous prime is 1244701387. The next prime is 1244701399. The reversal of 1244701389 is 9831074421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1244701389 - 2¹ = 1244701387 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 (1244701387) 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, 207450229 + ... + 207450234.

It is an arithmetic number, because the mean of its divisors is an integer number (414900464).

Almost surely, 2^1244701389 is an apocalyptic number.

It is an amenable number.

1244701389 is a deficient number, since it is larger than the sum of its proper divisors (414900467).

1244701389 is an equidigital number, since it uses as much as digits as its factorization.

1244701389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 414900466.

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 1244701389 is about 35280.3258063187. The cubic root of 1244701389 is about 1075.6931211314.

The spelling of 1244701389 in words is "one billion, two hundred forty-four million, seven hundred one thousand, three hundred eighty-nine".