1669479 has 24 divisors (see below), whose sum is σ = 2662128. Its totient is φ = 927360.

The previous prime is 1669471. The next prime is 1669489. The reversal of 1669479 is 9749661.

It is not a de Polignac number, because 1669479 - 2³ = 1669471 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1669479.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1669471) by changing a digit.

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 in 23 ways as a sum of consecutive naturals, for example, 5889 + ... + 6165.

It is an arithmetic number, because the mean of its divisors is an integer number (110922).

2^1669479 is an apocalyptic number.

1669479 is a deficient number, since it is larger than the sum of its proper divisors (992649).

1669479 is a wasteful number, since it uses less digits than its factorization.

1669479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 335 (or 328 counting only the distinct ones).

The product of its digits is 81648, while the sum is 42.

The square root of 1669479 is about 1292.0832016554. The cubic root of 1669479 is about 118.6297604725.

The spelling of 1669479 in words is "one million, six hundred sixty-nine thousand, four hundred seventy-nine".