19394099 has 2 divisors, whose sum is σ = 19394100. Its totient is φ = 19394098.

The previous prime is 19394051. The next prime is 19394119. The reversal of 19394099 is 99049391.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 19394099 - 2²⁴ = 2616883 is a prime.

It is a super-2 number, since 2×19394099² = 752262152043602, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (19394299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9697049 + 9697050.

It is an arithmetic number, because the mean of its divisors is an integer number (9697050).

Almost surely, 2^19394099 is an apocalyptic number.

19394099 is a deficient number, since it is larger than the sum of its proper divisors (1).

19394099 is an equidigital number, since it uses as much as digits as its factorization.

19394099 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 78732, while the sum is 44.

The square root of 19394099 is about 4403.8731816436. The cubic root of 19394099 is about 268.6724915118.

The spelling of 19394099 in words is "nineteen million, three hundred ninety-four thousand, ninety-nine".