1440146404 has 12 divisors (see below), whose sum is σ = 2539495728. Its totient is φ = 714576200.

The previous prime is 1440146341. The next prime is 1440146419. The reversal of 1440146404 is 4046410441.

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, 1373662 + ... + 1374709.

It is an arithmetic number, because the mean of its divisors is an integer number (211624644).

Almost surely, 2^1440146404 is an apocalyptic number.

It is an amenable number.

1440146404 is a deficient number, since it is larger than the sum of its proper divisors (1099349324).

1440146404 is a wasteful number, since it uses less digits than its factorization.

1440146404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2748506 (or 2748504 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 28.

The square root of 1440146404 is about 37949.2609150692. The cubic root of 1440146404 is about 1129.2815032045.

Adding to 1440146404 its reverse (4046410441), we get a palindrome (5486556845).

The spelling of 1440146404 in words is "one billion, four hundred forty million, one hundred forty-six thousand, four hundred four".