19900935 has 12 divisors (see below), whose sum is σ = 34495032. Its totient is φ = 10613808.

The previous prime is 19900927. The next prime is 19900967. The reversal of 19900935 is 53900991.

It is not a de Polignac number, because 19900935 - 2³ = 19900927 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 19900935.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 221077 + ... + 221166.

It is an arithmetic number, because the mean of its divisors is an integer number (2874586).

Almost surely, 2^19900935 is an apocalyptic number.

19900935 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

19900935 is a deficient number, since it is larger than the sum of its proper divisors (14594097).

19900935 is a wasteful number, since it uses less digits than its factorization.

19900935 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 442254 (or 442251 counting only the distinct ones).

The product of its (nonzero) digits is 10935, while the sum is 36.

The square root of 19900935 is about 4461.0464019107. The cubic root of 19900935 is about 270.9928466769.

The spelling of 19900935 in words is "nineteen million, nine hundred thousand, nine hundred thirty-five".