1444721234 has 16 divisors (see below), whose sum is σ = 2503154016. Its totient is φ = 618062400.

The previous prime is 1444721233. The next prime is 1444721237. The reversal of 1444721234 is 4321274441.

It is a self number, because there is not a number n which added to its sum of digits gives 1444721234.

It is not an unprimeable number, because it can be changed into a prime (1444721231) 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, 1931072 + ... + 1931819.

It is an arithmetic number, because the mean of its divisors is an integer number (156447126).

Almost surely, 2^1444721234 is an apocalyptic number.

1444721234 is a deficient number, since it is larger than the sum of its proper divisors (1058432782).

1444721234 is a wasteful number, since it uses less digits than its factorization.

1444721234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3862921.

The product of its digits is 21504, while the sum is 32.

The square root of 1444721234 is about 38009.4887363669. The cubic root of 1444721234 is about 1130.4760137195.

Adding to 1444721234 its reverse (4321274441), we get a palindrome (5765995675).

The spelling of 1444721234 in words is "one billion, four hundred forty-four million, seven hundred twenty-one thousand, two hundred thirty-four".