1439992 has 8 divisors (see below), whose sum is σ = 2700000. Its totient is φ = 719992.

The previous prime is 1439989. The next prime is 1440011. The reversal of 1439992 is 2999341.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 89992 + ... + 90007.

It is an arithmetic number, because the mean of its divisors is an integer number (337500).

2^1439992 is an apocalyptic number.

It is an amenable number.

1439992 is a deficient number, since it is larger than the sum of its proper divisors (1260008).

1439992 is a wasteful number, since it uses less digits than its factorization.

1439992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180005 (or 180001 counting only the distinct ones).

The product of its digits is 17496, while the sum is 37.

The square root of 1439992 is about 1199.9966666620. The cubic root of 1439992 is about 112.9241143462.

The spelling of 1439992 in words is "one million, four hundred thirty-nine thousand, nine hundred ninety-two".