133835389 has 2 divisors, whose sum is σ = 133835390. Its totient is φ = 133835388.

The previous prime is 133835371. The next prime is 133835399. The reversal of 133835389 is 983538331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 122478489 + 11356900 = 11067^2 + 3370^2 .

It is a cyclic number.

It is not a de Polignac number, because 133835389 - 2¹⁷ = 133704317 is a prime.

It is a super-2 number, since 2×133835389² = 35823822697562642, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133835309) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66917694 + 66917695.

It is an arithmetic number, because the mean of its divisors is an integer number (66917695).

Almost surely, 2^133835389 is an apocalyptic number.

It is an amenable number.

133835389 is a deficient number, since it is larger than the sum of its proper divisors (1).

133835389 is an equidigital number, since it uses as much as digits as its factorization.

133835389 is an evil number, because the sum of its binary digits is even.

The product of its digits is 233280, while the sum is 43.

The square root of 133835389 is about 11568.7246055907. The cubic root of 133835389 is about 511.5133684472.

The spelling of 133835389 in words is "one hundred thirty-three million, eight hundred thirty-five thousand, three hundred eighty-nine".