136945417 has 4 divisors (see below), whose sum is σ = 156509056. Its totient is φ = 117381780.

The previous prime is 136945409. The next prime is 136945423. The reversal of 136945417 is 714549631.

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, and also an emirpimes, since its reverse is a distinct semiprime: 714549631 = 569 ⋅1255799.

It is a cyclic number.

It is not a de Polignac number, because 136945417 - 2³ = 136945409 is a prime.

It is a Duffinian number.

It is a plaindrome in base 13.

It is a self number, because there is not a number n which added to its sum of digits gives 136945417.

It is not an unprimeable number, because it can be changed into a prime (136945447) 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, 9781809 + ... + 9781822.

It is an arithmetic number, because the mean of its divisors is an integer number (39127264).

Almost surely, 2^136945417 is an apocalyptic number.

It is an amenable number.

136945417 is a deficient number, since it is larger than the sum of its proper divisors (19563639).

136945417 is an equidigital number, since it uses as much as digits as its factorization.

136945417 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19563638.

The product of its digits is 90720, while the sum is 40.

The square root of 136945417 is about 11702.3680082281. The cubic root of 136945417 is about 515.4452014780.

The spelling of 136945417 in words is "one hundred thirty-six million, nine hundred forty-five thousand, four hundred seventeen".