1439669 has 12 divisors (see below), whose sum is σ = 1827648. Its totient is φ = 1121400.

The previous prime is 1439663. The next prime is 1439681. The reversal of 1439669 is 9669341.

It is not a de Polignac number, because 1439669 - 2⁸ = 1439413 is a prime.

It is a super-2 number, since 2×1439669² = 4145293659122, 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 (1439663) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 797 + ... + 1874.

It is an arithmetic number, because the mean of its divisors is an integer number (152304).

2^1439669 is an apocalyptic number.

It is an amenable number.

1439669 is a deficient number, since it is larger than the sum of its proper divisors (387979).

1439669 is a wasteful number, since it uses less digits than its factorization.

1439669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2696 (or 2689 counting only the distinct ones).

The product of its digits is 34992, while the sum is 38.

The square root of 1439669 is about 1199.8620754070. The cubic root of 1439669 is about 112.9156704992.

The spelling of 1439669 in words is "one million, four hundred thirty-nine thousand, six hundred sixty-nine".