19940412 has 24 divisors (see below), whose sum is σ = 47292112. Its totient is φ = 6537600.

The previous prime is 19940411. The next prime is 19940419. The reversal of 19940412 is 21404991.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 19940412.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19940411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12889 + ... + 14352.

Almost surely, 2^19940412 is an apocalyptic number.

19940412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

19940412 is an abundant number, since it is smaller than the sum of its proper divisors (27351700).

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

19940412 is a wasteful number, since it uses less digits than its factorization.

19940412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27309 (or 27307 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 19940412 is about 4465.4688443656. The cubic root of 19940412 is about 271.1719156271.

The spelling of 19940412 in words is "nineteen million, nine hundred forty thousand, four hundred twelve".