19949404 has 6 divisors (see below), whose sum is σ = 34911464. Its totient is φ = 9974700.

The previous prime is 19949393. The next prime is 19949429. The reversal of 19949404 is 40494991.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2493672 + ... + 2493679.

Almost surely, 2^19949404 is an apocalyptic number.

It is an amenable number.

19949404 is a deficient number, since it is larger than the sum of its proper divisors (14962060).

19949404 is a wasteful number, since it uses less digits than its factorization.

19949404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4987355 (or 4987353 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 19949404 is about 4466.4755680514. The cubic root of 19949404 is about 271.2126705763.

The spelling of 19949404 in words is "nineteen million, nine hundred forty-nine thousand, four hundred four".