19954005 has 24 divisors (see below), whose sum is σ = 33922272. Its totient is φ = 10013952.

The previous prime is 19953979. The next prime is 19954027. The reversal of 19954005 is 50045991.

It is not a de Polignac number, because 19954005 - 2⁷ = 19953877 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2034 + ... + 6636.

It is an arithmetic number, because the mean of its divisors is an integer number (1413428).

Almost surely, 2^19954005 is an apocalyptic number.

19954005 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

19954005 is a deficient number, since it is larger than the sum of its proper divisors (13968267).

19954005 is a wasteful number, since it uses less digits than its factorization.

19954005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4645 (or 4628 counting only the distinct ones).

The product of its (nonzero) digits is 8100, while the sum is 33.

The square root of 19954005 is about 4466.9905977067. The cubic root of 19954005 is about 271.2335192122.

Adding to 19954005 its reverse (50045991), we get a palindrome (69999996).

The spelling of 19954005 in words is "nineteen million, nine hundred fifty-four thousand, five".