136988441 has 2 divisors, whose sum is σ = 136988442. Its totient is φ = 136988440.

The previous prime is 136988419. The next prime is 136988459. The reversal of 136988441 is 144889631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 132595225 + 4393216 = 11515^2 + 2096^2 .

It is an emirp because it is prime and its reverse (144889631) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 136988441 - 2⁶ = 136988377 is a prime.

It is a super-2 number, since 2×136988441² = 37531665935220962, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 136988392 and 136988401.

It is not a weakly prime, because it can be changed into another prime (136988471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68494220 + 68494221.

It is an arithmetic number, because the mean of its divisors is an integer number (68494221).

Almost surely, 2^136988441 is an apocalyptic number.

It is an amenable number.

136988441 is a deficient number, since it is larger than the sum of its proper divisors (1).

136988441 is an equidigital number, since it uses as much as digits as its factorization.

136988441 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 165888, while the sum is 44.

The square root of 136988441 is about 11704.2061242957. The cubic root of 136988441 is about 515.4991747881.

The spelling of 136988441 in words is "one hundred thirty-six million, nine hundred eighty-eight thousand, four hundred forty-one".