19955404 has 12 divisors (see below), whose sum is σ = 39910864. Its totient is φ = 8552304.

The previous prime is 19955387. The next prime is 19955407. The reversal of 19955404 is 40455991.

19955404 is an admirable number.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a pancake number, because a pancake can be divided into 19955404 parts by 6317 straight cuts.

It is not an unprimeable number, because it can be changed into a prime (19955407) 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 3 ways as a sum of consecutive naturals, for example, 356319 + ... + 356374.

Almost surely, 2^19955404 is an apocalyptic number.

19955404 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

19955404 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

19955404 is a wasteful number, since it uses less digits than its factorization.

19955404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 712704 (or 712702 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 37.

The square root of 19955404 is about 4467.1471880832. The cubic root of 19955404 is about 271.2398579033.

The spelling of 19955404 in words is "nineteen million, nine hundred fifty-five thousand, four hundred four".