19479023 has 2 divisors, whose sum is σ = 19479024. Its totient is φ = 19479022.

The previous prime is 19479017. The next prime is 19479049. The reversal of 19479023 is 32097491.

It is a weak prime.

It is an emirp because it is prime and its reverse (32097491) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 19479023 - 2⁴ = 19479007 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19479073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9739511 + 9739512.

It is an arithmetic number, because the mean of its divisors is an integer number (9739512).

Almost surely, 2^19479023 is an apocalyptic number.

19479023 is a deficient number, since it is larger than the sum of its proper divisors (1).

19479023 is an equidigital number, since it uses as much as digits as its factorization.

19479023 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 19479023 is about 4413.5046165151. The cubic root of 19479023 is about 269.0640800339.

The spelling of 19479023 in words is "nineteen million, four hundred seventy-nine thousand, twenty-three".