13019999 has 2 divisors, whose sum is σ = 13020000. Its totient is φ = 13019998.

The previous prime is 13019989. The next prime is 13020017. The reversal of 13019999 is 99991031.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13019999 - 2⁴ = 13019983 is a prime.

13019999 is a modest number, since divided by 9999 gives 1301 as remainder.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13019989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6509999 + 6510000.

It is an arithmetic number, because the mean of its divisors is an integer number (6510000).

Almost surely, 2^13019999 is an apocalyptic number.

13019999 is a deficient number, since it is larger than the sum of its proper divisors (1).

13019999 is an equidigital number, since it uses as much as digits as its factorization.

13019999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19683, while the sum is 41.

The square root of 13019999 is about 3608.3235719652. The cubic root of 13019999 is about 235.2539822315.

The spelling of 13019999 in words is "thirteen million, nineteen thousand, nine hundred ninety-nine".