134577409 has 4 divisors (see below), whose sum is σ = 134795440. Its totient is φ = 134359380.

The previous prime is 134577319. The next prime is 134577413. The reversal of 134577409 is 904775431.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 134577409 - 2¹³ = 134569217 is a prime.

It is a super-3 number, since 3×134577409³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (134577419) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 108087 + ... + 109324.

It is an arithmetic number, because the mean of its divisors is an integer number (33698860).

Almost surely, 2^134577409 is an apocalyptic number.

It is an amenable number.

134577409 is a deficient number, since it is larger than the sum of its proper divisors (218031).

134577409 is an equidigital number, since it uses as much as digits as its factorization.

134577409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 218030.

The product of its (nonzero) digits is 105840, while the sum is 40.

The square root of 134577409 is about 11600.7503636618. The cubic root of 134577409 is about 512.4569501019.

The spelling of 134577409 in words is "one hundred thirty-four million, five hundred seventy-seven thousand, four hundred nine".