1440383898 has 32 divisors (see below), whose sum is σ = 2898830592. Its totient is φ = 477128000.

The previous prime is 1440383891. The next prime is 1440383899. The reversal of 1440383898 is 8983830441.

It is not an unprimeable number, because it can be changed into a prime (1440383891) 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, 756748 + ... + 758648.

It is an arithmetic number, because the mean of its divisors is an integer number (90588456).

Almost surely, 2^1440383898 is an apocalyptic number.

1440383898 is an abundant number, since it is smaller than the sum of its proper divisors (1458446694).

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

1440383898 is a wasteful number, since it uses less digits than its factorization.

1440383898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2630.

The product of its (nonzero) digits is 663552, while the sum is 48.

The square root of 1440383898 is about 37952.3898852233. The cubic root of 1440383898 is about 1129.3435762546.

The spelling of 1440383898 in words is "one billion, four hundred forty million, three hundred eighty-three thousand, eight hundred ninety-eight".