1440019 has 8 divisors (see below), whose sum is σ = 1742688. Its totient is φ = 1161600.

The previous prime is 1440017. The next prime is 1440037. The reversal of 1440019 is 9100441.

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

It is a cyclic number.

It is not a de Polignac number, because 1440019 - 2¹ = 1440017 is a prime.

It is a super-2 number, since 2×1440019² = 4147309440722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1439978 and 1440005.

It is not an unprimeable number, because it can be changed into a prime (1440011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5932 + ... + 6169.

It is an arithmetic number, because the mean of its divisors is an integer number (217836).

2^1440019 is an apocalyptic number.

1440019 is a deficient number, since it is larger than the sum of its proper divisors (302669).

1440019 is a wasteful number, since it uses less digits than its factorization.

1440019 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12125.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 1440019 is about 1200.0079166406. The cubic root of 1440019 is about 112.9248201214.

Subtracting from 1440019 its sum of digits (19), we obtain a square (1440000 = 1200²).

The spelling of 1440019 in words is "one million, four hundred forty thousand, nineteen".