1440004004 has 12 divisors (see below), whose sum is σ = 2520490224. Its totient is φ = 719863944.

The previous prime is 1440003979. The next prime is 1440004051. The reversal of 1440004004 is 4004000441.

It is a super-2 number, since 2×1440004004² = 4147223063072064032, which contains 22 as substring.

1440004004 is a modest number, since divided by 4004 gives 1440 as remainder.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8942 + ... + 54405.

It is an arithmetic number, because the mean of its divisors is an integer number (210040852).

Almost surely, 2^1440004004 is an apocalyptic number.

It is an amenable number.

1440004004 is a deficient number, since it is larger than the sum of its proper divisors (1080486220).

1440004004 is a wasteful number, since it uses less digits than its factorization.

1440004004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69034 (or 69032 counting only the distinct ones).

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

The square root of 1440004004 is about 37947.3846793162. The cubic root of 1440004004 is about 1129.2442812974.

Adding to 1440004004 its reverse (4004000441), we get a palindrome (5444004445).

The spelling of 1440004004 in words is "one billion, four hundred forty million, four thousand, four".