1444787980 has 24 divisors (see below), whose sum is σ = 3036126240. Its totient is φ = 577520640.

The previous prime is 1444787969. The next prime is 1444787999. The reversal of 1444787980 is 897874441.

It is a happy number.

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, 6316 + ... + 54124.

It is an arithmetic number, because the mean of its divisors is an integer number (126505260).

Almost surely, 2^1444787980 is an apocalyptic number.

1444787980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1444787980 is an abundant number, since it is smaller than the sum of its proper divisors (1591338260).

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

1444787980 is a wasteful number, since it uses less digits than its factorization.

1444787980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49329 (or 49327 counting only the distinct ones).

The product of its (nonzero) digits is 1806336, while the sum is 52.

The square root of 1444787980 is about 38010.3667438240. The cubic root of 1444787980 is about 1130.4934227504.

The spelling of 1444787980 in words is "one billion, four hundred forty-four million, seven hundred eighty-seven thousand, nine hundred eighty".