1689396924 has 12 divisors (see below), whose sum is σ = 3941926184. Its totient is φ = 563132304.

The previous prime is 1689396901. The next prime is 1689396941. The reversal of 1689396924 is 4296939861.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70391527 + ... + 70391550.

Almost surely, 2^1689396924 is an apocalyptic number.

It is an amenable number.

1689396924 is an abundant number, since it is smaller than the sum of its proper divisors (2252529260).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1689396924 is a wasteful number, since it uses less digits than its factorization.

1689396924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140783084 (or 140783082 counting only the distinct ones).

The product of its digits is 5038848, while the sum is 57.

The square root of 1689396924 is about 41102.2739516927. The cubic root of 1689396924 is about 1190.9967225414.

The spelling of 1689396924 in words is "one billion, six hundred eighty-nine million, three hundred ninety-six thousand, nine hundred twenty-four".