209030393 has 16 divisors (see below), whose sum is σ = 247072896. Its totient is φ = 174339840.

The previous prime is 209030383. The next prime is 209030399. The reversal of 209030393 is 393030902.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 209030393 - 2⁶ = 209030329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (209030399) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19505 + ... + 28257.

It is an arithmetic number, because the mean of its divisors is an integer number (15442056).

Almost surely, 2^209030393 is an apocalyptic number.

It is an amenable number.

209030393 is a deficient number, since it is larger than the sum of its proper divisors (38042503).

209030393 is a wasteful number, since it uses less digits than its factorization.

209030393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8944.

The product of its (nonzero) digits is 4374, while the sum is 29.

The square root of 209030393 is about 14457.8834204734. The cubic root of 209030393 is about 593.4759792185.

The spelling of 209030393 in words is "two hundred nine million, thirty thousand, three hundred ninety-three".