19239049 has 2 divisors, whose sum is σ = 19239050. Its totient is φ = 19239048.

The previous prime is 19239037. The next prime is 19239067. The reversal of 19239049 is 94093291.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16867449 + 2371600 = 4107^2 + 1540^2 .

It is an emirp because it is prime and its reverse (94093291) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19239049 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 19238999 and 19239017.

It is not a weakly prime, because it can be changed into another prime (19239089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9619524 + 9619525.

It is an arithmetic number, because the mean of its divisors is an integer number (9619525).

Almost surely, 2^19239049 is an apocalyptic number.

It is an amenable number.

19239049 is a deficient number, since it is larger than the sum of its proper divisors (1).

19239049 is an equidigital number, since it uses as much as digits as its factorization.

19239049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17496, while the sum is 37.

The square root of 19239049 is about 4386.2340338837. The cubic root of 19239049 is about 267.9545896551.

The spelling of 19239049 in words is "nineteen million, two hundred thirty-nine thousand, forty-nine".