135947737 has 4 divisors (see below), whose sum is σ = 140635620. Its totient is φ = 131259856.

The previous prime is 135947729. The next prime is 135947753. The reversal of 135947737 is 737749531.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 25613721 + 110334016 = 5061^2 + 10504^2 .

It is a cyclic number.

It is not a de Polignac number, because 135947737 - 2³ = 135947729 is a prime.

It is a super-3 number, since 3×135947737³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (135947797) 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, 2343898 + ... + 2343955.

It is an arithmetic number, because the mean of its divisors is an integer number (35158905).

Almost surely, 2^135947737 is an apocalyptic number.

It is an amenable number.

135947737 is a deficient number, since it is larger than the sum of its proper divisors (4687883).

135947737 is an equidigital number, since it uses as much as digits as its factorization.

135947737 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4687882.

The product of its digits is 555660, while the sum is 46.

The square root of 135947737 is about 11659.6628167370. The cubic root of 135947737 is about 514.1904357261.

The spelling of 135947737 in words is "one hundred thirty-five million, nine hundred forty-seven thousand, seven hundred thirty-seven".