1489229840 has 40 divisors (see below), whose sum is σ = 3957097920. Its totient is φ = 510592896.

The previous prime is 1489229803. The next prime is 1489229851. The reversal of 1489229840 is 489229841.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

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, 1329110 + ... + 1330229.

It is an arithmetic number, because the mean of its divisors is an integer number (98927448).

Almost surely, 2^1489229840 is an apocalyptic number.

1489229840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1489229840 is an abundant number, since it is smaller than the sum of its proper divisors (2467868080).

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

1489229840 is a wasteful number, since it uses less digits than its factorization.

1489229840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2659359 (or 2659353 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 47.

The square root of 1489229840 is about 38590.5408098928. The cubic root of 1489229840 is about 1141.9679356476.

Subtracting from 1489229840 its reverse (489229841), we obtain a palindrome (999999999).

The spelling of 1489229840 in words is "one billion, four hundred eighty-nine million, two hundred twenty-nine thousand, eight hundred forty".