1440402002 has 32 divisors (see below), whose sum is σ = 2431537920. Its totient is φ = 634962240.

The previous prime is 1440401983. The next prime is 1440402017. The reversal of 1440402002 is 2002040441.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 548252 + ... + 550872.

It is an arithmetic number, because the mean of its divisors is an integer number (75985560).

Almost surely, 2^1440402002 is an apocalyptic number.

1440402002 is a deficient number, since it is larger than the sum of its proper divisors (991135918).

1440402002 is a wasteful number, since it uses less digits than its factorization.

1440402002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3578.

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 1440402002 is about 37952.6283938280. The cubic root of 1440402002 is about 1129.3483077595.

Adding to 1440402002 its reverse (2002040441), we get a palindrome (3442442443).

The spelling of 1440402002 in words is "one billion, four hundred forty million, four hundred two thousand, two".