1440987423 has 8 divisors (see below), whose sum is σ = 1922921136. Its totient is φ = 959856000.

The previous prime is 1440987403. The next prime is 1440987437. The reversal of 1440987423 is 3247890441.

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

It is not a de Polignac number, because 1440987423 - 2⁵ = 1440987391 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1440987403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 196368 + ... + 203573.

It is an arithmetic number, because the mean of its divisors is an integer number (240365142).

Almost surely, 2^1440987423 is an apocalyptic number.

1440987423 is a deficient number, since it is larger than the sum of its proper divisors (481933713).

1440987423 is a wasteful number, since it uses less digits than its factorization.

1440987423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401145.

The product of its (nonzero) digits is 193536, while the sum is 42.

The square root of 1440987423 is about 37960.3401328281. The cubic root of 1440987423 is about 1129.5012869662.

The spelling of 1440987423 in words is "one billion, four hundred forty million, nine hundred eighty-seven thousand, four hundred twenty-three".