1440164 has 24 divisors (see below), whose sum is σ = 2794176. Its totient is φ = 644000.

The previous prime is 1440119. The next prime is 1440203. The reversal of 1440164 is 4610441.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2894 + ... + 3354.

It is an arithmetic number, because the mean of its divisors is an integer number (116424).

2^1440164 is an apocalyptic number.

It is an amenable number.

1440164 is a deficient number, since it is larger than the sum of its proper divisors (1354012).

1440164 is a wasteful number, since it uses less digits than its factorization.

1440164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 547 (or 545 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 1440164 is about 1200.0683313878. The cubic root of 1440164 is about 112.9286102449.

The spelling of 1440164 in words is "one million, four hundred forty thousand, one hundred sixty-four".