219040399 has 2 divisors, whose sum is σ = 219040400. Its totient is φ = 219040398.

The previous prime is 219040313. The next prime is 219040429. The reversal of 219040399 is 993040912.

219040399 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 219040399 - 2¹³ = 219032207 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (219040309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 109520199 + 109520200.

It is an arithmetic number, because the mean of its divisors is an integer number (109520200).

Almost surely, 2^219040399 is an apocalyptic number.

219040399 is a deficient number, since it is larger than the sum of its proper divisors (1).

219040399 is an equidigital number, since it uses as much as digits as its factorization.

219040399 is an evil number, because the sum of its binary digits is even.

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

The square root of 219040399 is about 14800.0134797236. The cubic root of 219040399 is about 602.8020778212.

The spelling of 219040399 in words is "two hundred nineteen million, forty thousand, three hundred ninety-nine".