1444312457 has 16 divisors (see below), whose sum is σ = 1669937280. Its totient is φ = 1223569152.

The previous prime is 1444312421. The next prime is 1444312481. The reversal of 1444312457 is 7542134441.

It is a cyclic number.

It is not a de Polignac number, because 1444312457 - 2¹⁸ = 1444050313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1444312757) 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, 335873 + ... + 340145.

It is an arithmetic number, because the mean of its divisors is an integer number (104371080).

Almost surely, 2^1444312457 is an apocalyptic number.

It is an amenable number.

1444312457 is a deficient number, since it is larger than the sum of its proper divisors (225624823).

1444312457 is a wasteful number, since it uses less digits than its factorization.

1444312457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4832.

The product of its digits is 53760, while the sum is 35.

The square root of 1444312457 is about 38004.1110539373. Note that the first 3 decimals coincide. The cubic root of 1444312457 is about 1130.3693827253.

Adding to 1444312457 its reverse (7542134441), we get a palindrome (8986446898).

The spelling of 1444312457 in words is "one billion, four hundred forty-four million, three hundred twelve thousand, four hundred fifty-seven".