210424393 has 2 divisors, whose sum is σ = 210424394. Its totient is φ = 210424392.

The previous prime is 210424307. The next prime is 210424429. The reversal of 210424393 is 393424012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 170380809 + 40043584 = 13053^2 + 6328^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210424393 is a prime.

It is equal to p_11623717 and since 210424393 and 11623717 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (210424303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 105212196 + 105212197.

It is an arithmetic number, because the mean of its divisors is an integer number (105212197).

Almost surely, 2^210424393 is an apocalyptic number.

It is an amenable number.

210424393 is a deficient number, since it is larger than the sum of its proper divisors (1).

210424393 is an equidigital number, since it uses as much as digits as its factorization.

210424393 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 210424393 is about 14506.0123052478. The cubic root of 210424393 is about 594.7923320190.

The spelling of 210424393 in words is "two hundred ten million, four hundred twenty-four thousand, three hundred ninety-three".