1444340420 has 24 divisors (see below), whose sum is σ = 3034707648. Its totient is φ = 577432800.

The previous prime is 1444340419. The next prime is 1444340431. The reversal of 1444340420 is 240434441.

It is a happy number.

It is a super-2 number, since 2×1444340420² = 4172238497691552800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1444340420.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22265 + ... + 58175.

It is an arithmetic number, because the mean of its divisors is an integer number (126446152).

Almost surely, 2^1444340420 is an apocalyptic number.

1444340420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1444340420 is an abundant number, since it is smaller than the sum of its proper divisors (1590367228).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1444340420 is a wasteful number, since it uses less digits than its factorization.

1444340420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37931 (or 37929 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 26.

The square root of 1444340420 is about 38004.4789465663. The cubic root of 1444340420 is about 1130.3766776184.

Adding to 1444340420 its reverse (240434441), we get a palindrome (1684774861).

The spelling of 1444340420 in words is "one billion, four hundred forty-four million, three hundred forty thousand, four hundred twenty".