1440104887 has 4 divisors (see below), whose sum is σ = 1550882200. Its totient is φ = 1329327576.

The previous prime is 1440104821. The next prime is 1440104891. The reversal of 1440104887 is 7884010441.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1440104887 - 2²⁷ = 1305887159 is a prime.

It is a super-2 number, since 2×1440104887² = 4147804171122565538, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1440104087) by changing a digit.

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, 55388637 + ... + 55388662.

It is an arithmetic number, because the mean of its divisors is an integer number (387720550).

Almost surely, 2^1440104887 is an apocalyptic number.

1440104887 is a deficient number, since it is larger than the sum of its proper divisors (110777313).

1440104887 is a wasteful number, since it uses less digits than its factorization.

1440104887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110777312.

The product of its (nonzero) digits is 28672, while the sum is 37.

The square root of 1440104887 is about 37948.7139044263. The cubic root of 1440104887 is about 1129.2706513377.

The spelling of 1440104887 in words is "one billion, four hundred forty million, one hundred four thousand, eight hundred eighty-seven".