136947841 has 4 divisors (see below), whose sum is σ = 140649172. Its totient is φ = 133246512.

The previous prime is 136947827. The next prime is 136947851. The reversal of 136947841 is 148749631.

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 131790400 + 5157441 = 11480^2 + 2271^2 .

It is a cyclic number.

It is not a de Polignac number, because 136947841 - 2¹⁵ = 136915073 is a prime.

It is a super-2 number, since 2×136947841² = 37509422309122562, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136947821) 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, 1850610 + ... + 1850683.

It is an arithmetic number, because the mean of its divisors is an integer number (35162293).

Almost surely, 2^136947841 is an apocalyptic number.

It is an amenable number.

136947841 is a deficient number, since it is larger than the sum of its proper divisors (3701331).

136947841 is an equidigital number, since it uses as much as digits as its factorization.

136947841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3701330.

The product of its digits is 145152, while the sum is 43.

The square root of 136947841 is about 11702.4715765517. The cubic root of 136947841 is about 515.4482426697.

The spelling of 136947841 in words is "one hundred thirty-six million, nine hundred forty-seven thousand, eight hundred forty-one".