1444440152 has 8 divisors (see below), whose sum is σ = 2708325300. Its totient is φ = 722220072.

The previous prime is 1444440131. The next prime is 1444440157. The reversal of 1444440152 is 2510444441.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1444440157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90277502 + ... + 90277517.

Almost surely, 2^1444440152 is an apocalyptic number.

It is an amenable number.

1444440152 is a deficient number, since it is larger than the sum of its proper divisors (1263885148).

1444440152 is a wasteful number, since it uses less digits than its factorization.

1444440152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180555025 (or 180555021 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 29.

The square root of 1444440152 is about 38005.7910324203. The cubic root of 1444440152 is about 1130.4026945995.

Adding to 1444440152 its reverse (2510444441), we get a palindrome (3954884593).

The spelling of 1444440152 in words is "one billion, four hundred forty-four million, four hundred forty thousand, one hundred fifty-two".