208427393 has 2 divisors, whose sum is σ = 208427394. Its totient is φ = 208427392.

The previous prime is 208427383. The next prime is 208427399. The reversal of 208427393 is 393724802.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 152596609 + 55830784 = 12353^2 + 7472^2 .

It is a cyclic number.

It is not a de Polignac number, because 208427393 - 2¹⁴ = 208411009 is a prime.

It is not a weakly prime, because it can be changed into another prime (208427399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 104213696 + 104213697.

It is an arithmetic number, because the mean of its divisors is an integer number (104213697).

Almost surely, 2^208427393 is an apocalyptic number.

It is an amenable number.

208427393 is a deficient number, since it is larger than the sum of its proper divisors (1).

208427393 is an equidigital number, since it uses as much as digits as its factorization.

208427393 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72576, while the sum is 38.

The square root of 208427393 is about 14437.0146844838. The cubic root of 208427393 is about 592.9047533781.

The spelling of 208427393 in words is "two hundred eight million, four hundred twenty-seven thousand, three hundred ninety-three".