134205649 has 8 divisors (see below), whose sum is σ = 138980160. Its totient is φ = 129440976.

The previous prime is 134205647. The next prime is 134205653. The reversal of 134205649 is 946502431.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 134205649 - 2¹ = 134205647 is a prime.

It is a super-2 number, since 2×134205649² = 36022312447022402, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (134205647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35404 + ... + 39010.

It is an arithmetic number, because the mean of its divisors is an integer number (17372520).

Almost surely, 2^134205649 is an apocalyptic number.

It is an amenable number.

134205649 is a deficient number, since it is larger than the sum of its proper divisors (4774511).

134205649 is a wasteful number, since it uses less digits than its factorization.

134205649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4919.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 134205649 is about 11584.7161812450. The cubic root of 134205649 is about 511.9846402965.

The spelling of 134205649 in words is "one hundred thirty-four million, two hundred five thousand, six hundred forty-nine".