19940885 has 16 divisors (see below), whose sum is σ = 25094016. Its totient is φ = 15183168.

The previous prime is 19940873. The next prime is 19940911. The reversal of 19940885 is 58804991.

It is a cyclic number.

It is not a de Polignac number, because 19940885 - 2⁶ = 19940821 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36182 + ... + 36728.

It is an arithmetic number, because the mean of its divisors is an integer number (1568376).

Almost surely, 2^19940885 is an apocalyptic number.

It is an amenable number.

19940885 is a deficient number, since it is larger than the sum of its proper divisors (5153131).

19940885 is a wasteful number, since it uses less digits than its factorization.

19940885 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 892.

The product of its (nonzero) digits is 103680, while the sum is 44.

The square root of 19940885 is about 4465.5218060155. The cubic root of 19940885 is about 271.1740597370.

The spelling of 19940885 in words is "nineteen million, nine hundred forty thousand, eight hundred eighty-five".