135907949 has 4 divisors (see below), whose sum is σ = 140594460. Its totient is φ = 131221440.

The previous prime is 135907921. The next prime is 135907991. The reversal of 135907949 is 949709531.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 949709531 = 7793 ⋅121867.

It can be written as a sum of positive squares in 2 ways, for example, as 49603849 + 86304100 = 7043^2 + 9290^2 .

It is a cyclic number.

It is not a de Polignac number, because 135907949 - 2⁸ = 135907693 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135907909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2343212 + ... + 2343269.

It is an arithmetic number, because the mean of its divisors is an integer number (35148615).

Almost surely, 2^135907949 is an apocalyptic number.

It is an amenable number.

135907949 is a deficient number, since it is larger than the sum of its proper divisors (4686511).

135907949 is an equidigital number, since it uses as much as digits as its factorization.

135907949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4686510.

The product of its (nonzero) digits is 306180, while the sum is 47.

The square root of 135907949 is about 11657.9564675804. The cubic root of 135907949 is about 514.1402679050.

The spelling of 135907949 in words is "one hundred thirty-five million, nine hundred seven thousand, nine hundred forty-nine".