133720469 has 2 divisors, whose sum is σ = 133720470. Its totient is φ = 133720468.

The previous prime is 133720429. The next prime is 133720481. The reversal of 133720469 is 964027331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 86248369 + 47472100 = 9287^2 + 6890^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-133720469 is a prime.

It is a super-2 number, since 2×133720469² = 35762327659159922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (133720429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 66860234 + 66860235.

It is an arithmetic number, because the mean of its divisors is an integer number (66860235).

Almost surely, 2^133720469 is an apocalyptic number.

It is an amenable number.

133720469 is a deficient number, since it is larger than the sum of its proper divisors (1).

133720469 is an equidigital number, since it uses as much as digits as its factorization.

133720469 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27216, while the sum is 35.

The square root of 133720469 is about 11563.7566992738. The cubic root of 133720469 is about 511.3669200133.

The spelling of 133720469 in words is "one hundred thirty-three million, seven hundred twenty thousand, four hundred sixty-nine".