1440225898 has 8 divisors (see below), whose sum is σ = 2234833380. Its totient is φ = 695281440.

The previous prime is 1440225889. The next prime is 1440225911. The reversal of 1440225898 is 8985220441.

It can be written as a sum of positive squares in 2 ways, for example, as 1379899609 + 60326289 = 37147^2 + 7767^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12415683 + ... + 12415798.

Almost surely, 2^1440225898 is an apocalyptic number.

1440225898 is a deficient number, since it is larger than the sum of its proper divisors (794607482).

1440225898 is a wasteful number, since it uses less digits than its factorization.

1440225898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24831512.

The product of its (nonzero) digits is 184320, while the sum is 43.

The square root of 1440225898 is about 37950.3082727927. The cubic root of 1440225898 is about 1129.3022810577.

The spelling of 1440225898 in words is "one billion, four hundred forty million, two hundred twenty-five thousand, eight hundred ninety-eight".