393109 has 2 divisors, whose sum is σ = 393110. Its totient is φ = 393108.

The previous prime is 393103. The next prime is 393121. The reversal of 393109 is 901393.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 378225 + 14884 = 615^2 + 122^2 .

It is a cyclic number.

It is not a de Polignac number, because 393109 - 2⁵ = 393077 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (393103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 196554 + 196555.

It is an arithmetic number, because the mean of its divisors is an integer number (196555).

2³⁹³¹⁰⁹ is an apocalyptic number.

It is an amenable number.

393109 is a deficient number, since it is larger than the sum of its proper divisors (1).

393109 is an equidigital number, since it uses as much as digits as its factorization.

393109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 729, while the sum is 25.

The square root of 393109 is about 626.9840508338. The cubic root of 393109 is about 73.2550657153.

The spelling of 393109 in words is "three hundred ninety-three thousand, one hundred nine".