19931396 has 12 divisors (see below), whose sum is σ = 35112000. Its totient is φ = 9899400.

The previous prime is 19931383. The next prime is 19931447. The reversal of 19931396 is 69313991.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15896 + ... + 17103.

It is an arithmetic number, because the mean of its divisors is an integer number (2926000).

Almost surely, 2^19931396 is an apocalyptic number.

It is an amenable number.

19931396 is a deficient number, since it is larger than the sum of its proper divisors (15180604).

19931396 is a wasteful number, since it uses less digits than its factorization.

19931396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33154 (or 33152 counting only the distinct ones).

The product of its digits is 39366, while the sum is 41.

The square root of 19931396 is about 4464.4592057717. The cubic root of 19931396 is about 271.1310395983.

The spelling of 19931396 in words is "nineteen million, nine hundred thirty-one thousand, three hundred ninety-six".