1444457431 has 8 divisors (see below), whose sum is σ = 1555881984. Its totient is φ = 1337084760.

The previous prime is 1444457381. The next prime is 1444457437. The reversal of 1444457431 is 1347544441.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1444457431 - 2⁷ = 1444457303 is a prime.

It is a super-2 number, since 2×1444457431² = 4172914539942239522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1444457437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1012231 + ... + 1013656.

It is an arithmetic number, because the mean of its divisors is an integer number (194485248).

Almost surely, 2^1444457431 is an apocalyptic number.

1444457431 is a deficient number, since it is larger than the sum of its proper divisors (111424553).

1444457431 is a wasteful number, since it uses less digits than its factorization.

1444457431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2025941.

The product of its digits is 107520, while the sum is 37.

The square root of 1444457431 is about 38006.0183523610. The cubic root of 1444457431 is about 1130.4072020322.

The spelling of 1444457431 in words is "one billion, four hundred forty-four million, four hundred fifty-seven thousand, four hundred thirty-one".