19947795 has 32 divisors (see below), whose sum is σ = 37739520. Its totient is φ = 8803200.

The previous prime is 19947757. The next prime is 19947797. The reversal of 19947795 is 59774991.

It is a happy number.

It is not a de Polignac number, because 19947795 - 2⁶ = 19947731 is a prime.

It is not an unprimeable number, because it can be changed into a prime (19947797) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 231 + ... + 6320.

It is an arithmetic number, because the mean of its divisors is an integer number (1179360).

Almost surely, 2^19947795 is an apocalyptic number.

19947795 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

19947795 is a deficient number, since it is larger than the sum of its proper divisors (17791725).

19947795 is a wasteful number, since it uses less digits than its factorization.

19947795 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6595.

The product of its digits is 714420, while the sum is 51.

The square root of 19947795 is about 4466.2954447730. The cubic root of 19947795 is about 271.2053789146.

The spelling of 19947795 in words is "nineteen million, nine hundred forty-seven thousand, seven hundred ninety-five".