136441397 has 4 divisors (see below), whose sum is σ = 136496076. Its totient is φ = 136386720.

The previous prime is 136441387. The next prime is 136441411. The reversal of 136441397 is 793144631.

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 104980516 + 31460881 = 10246^2 + 5609^2 .

It is a cyclic number.

It is not a de Polignac number, because 136441397 - 2²⁰ = 135392821 is a prime.

It is a super-3 number, since 3×136441397³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 136441397.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136441367) 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, 23408 + ... + 28649.

It is an arithmetic number, because the mean of its divisors is an integer number (34124019).

Almost surely, 2^136441397 is an apocalyptic number.

It is an amenable number.

136441397 is a deficient number, since it is larger than the sum of its proper divisors (54679).

136441397 is an equidigital number, since it uses as much as digits as its factorization.

136441397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54678.

The product of its digits is 54432, while the sum is 38.

The square root of 136441397 is about 11680.8131994309. The cubic root of 136441397 is about 514.8120682940.

The spelling of 136441397 in words is "one hundred thirty-six million, four hundred forty-one thousand, three hundred ninety-seven".