136400377 has 2 divisors, whose sum is σ = 136400378. Its totient is φ = 136400376.

The previous prime is 136400359. The next prime is 136400387. The reversal of 136400377 is 773004631.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 133263936 + 3136441 = 11544^2 + 1771^2 .

It is a cyclic number.

It is not a de Polignac number, because 136400377 - 2¹¹ = 136398329 is a prime.

It is not a weakly prime, because it can be changed into another prime (136400357) 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 as a sum of consecutive naturals, namely, 68200188 + 68200189.

It is an arithmetic number, because the mean of its divisors is an integer number (68200189).

Almost surely, 2^136400377 is an apocalyptic number.

It is an amenable number.

136400377 is a deficient number, since it is larger than the sum of its proper divisors (1).

136400377 is an equidigital number, since it uses as much as digits as its factorization.

136400377 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10584, while the sum is 31.

The square root of 136400377 is about 11679.0571965377. The cubic root of 136400377 is about 514.7604717646.

The spelling of 136400377 in words is "one hundred thirty-six million, four hundred thousand, three hundred seventy-seven".