1444457460 has 48 divisors (see below), whose sum is σ = 4046579712. Its totient is φ = 384988800.

The previous prime is 1444457453. The next prime is 1444457461. The reversal of 1444457460 is 647544441.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1444457461) 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, 137805 + ... + 147915.

It is an arithmetic number, because the mean of its divisors is an integer number (84303744).

Almost surely, 2^1444457460 is an apocalyptic number.

1444457460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1444457460 is an abundant number, since it is smaller than the sum of its proper divisors (2602122252).

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

1444457460 is a wasteful number, since it uses less digits than its factorization.

1444457460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12504 (or 12502 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 39.

The square root of 1444457460 is about 38006.0187338795. The cubic root of 1444457460 is about 1130.4072095972.

The spelling of 1444457460 in words is "one billion, four hundred forty-four million, four hundred fifty-seven thousand, four hundred sixty".