19479049 has 2 divisors, whose sum is σ = 19479050. Its totient is φ = 19479048.

The previous prime is 19479023. The next prime is 19479073. The reversal of 19479049 is 94097491.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16257024 + 3222025 = 4032^2 + 1795^2 .

It is a cyclic number.

It is not a de Polignac number, because 19479049 - 2⁵ = 19479017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 19478996 and 19479014.

It is not a weakly prime, because it can be changed into another prime (19479079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9739524 + 9739525.

It is an arithmetic number, because the mean of its divisors is an integer number (9739525).

Almost surely, 2^19479049 is an apocalyptic number.

It is an amenable number.

19479049 is a deficient number, since it is larger than the sum of its proper divisors (1).

19479049 is an equidigital number, since it uses as much as digits as its factorization.

19479049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81648, while the sum is 43.

The square root of 19479049 is about 4413.5075620191. The cubic root of 19479049 is about 269.0641997466.

The spelling of 19479049 in words is "nineteen million, four hundred seventy-nine thousand, forty-nine".