19797463 has 4 divisors (see below), whose sum is σ = 22625680. Its totient is φ = 16969248.

The previous prime is 19797443. The next prime is 19797473. The reversal of 19797463 is 36479791.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 19797463 - 2⁵ = 19797431 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19797403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1414098 + ... + 1414111.

It is an arithmetic number, because the mean of its divisors is an integer number (5656420).

Almost surely, 2^19797463 is an apocalyptic number.

19797463 is a deficient number, since it is larger than the sum of its proper divisors (2828217).

19797463 is an equidigital number, since it uses as much as digits as its factorization.

19797463 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2828216.

The product of its digits is 285768, while the sum is 46.

The square root of 19797463 is about 4449.4340089499. The cubic root of 19797463 is about 270.5223677837.

The spelling of 19797463 in words is "nineteen million, seven hundred ninety-seven thousand, four hundred sixty-three".