35138209 has 2 divisors, whose sum is σ = 35138210. Its totient is φ = 35138208.

The previous prime is 35138183. The next prime is 35138231. The reversal of 35138209 is 90283153.

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., 35046400 + 91809 = 5920^2 + 303^2 .

It is an emirp because it is prime and its reverse (90283153) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 35138209 - 2²³ = 26749601 is a prime.

It is a super-4 number, since 4×35138209⁴ (a number of 31 digits) contains 4444 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (35138309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17569104 + 17569105.

It is an arithmetic number, because the mean of its divisors is an integer number (17569105).

Almost surely, 2^35138209 is an apocalyptic number.

It is an amenable number.

35138209 is a deficient number, since it is larger than the sum of its proper divisors (1).

35138209 is an equidigital number, since it uses as much as digits as its factorization.

35138209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 35138209 is about 5927.7490668887. The cubic root of 35138209 is about 327.5366281897.

The spelling of 35138209 in words is "thirty-five million, one hundred thirty-eight thousand, two hundred nine".