19740869 has 8 divisors (see below), whose sum is σ = 20620320. Its totient is φ = 18879696.

The previous prime is 19740863. The next prime is 19740883. The reversal of 19740869 is 96804791.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 19740869 - 2¹⁶ = 19675333 is a prime.

It is a super-2 number, since 2×19740869² = 779403817750322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19740863) 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, 2339 + ... + 6704.

It is an arithmetic number, because the mean of its divisors is an integer number (2577540).

Almost surely, 2^19740869 is an apocalyptic number.

It is an amenable number.

19740869 is a deficient number, since it is larger than the sum of its proper divisors (879451).

19740869 is an equidigital number, since it uses as much as digits as its factorization.

19740869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9139.

The product of its (nonzero) digits is 108864, while the sum is 44.

The square root of 19740869 is about 4443.0697721283. The cubic root of 19740869 is about 270.2643455870.

The spelling of 19740869 in words is "nineteen million, seven hundred forty thousand, eight hundred sixty-nine".