1385904 has 40 divisors (see below), whose sum is σ = 3857392. Its totient is φ = 426240.

The previous prime is 1385899. The next prime is 1385921. The reversal of 1385904 is 4095831.

It is a congruent 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, 487 + ... + 1734.

2^1385904 is an apocalyptic number.

It is an amenable number.

1385904 is an abundant number, since it is smaller than the sum of its proper divisors (2471488).

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

1385904 is a wasteful number, since it uses less digits than its factorization.

1385904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2245 (or 2239 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 1385904 is about 1177.2442397396. The cubic root of 1385904 is about 111.4921737018.

The spelling of 1385904 in words is "one million, three hundred eighty-five thousand, nine hundred four".