135629749 has 2 divisors, whose sum is σ = 135629750. Its totient is φ = 135629748.

The previous prime is 135629729. The next prime is 135629797. The reversal of 135629749 is 947926531.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 134397649 + 1232100 = 11593^2 + 1110^2 .

It is a cyclic number.

It is not a de Polignac number, because 135629749 - 2⁹ = 135629237 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 135629699 and 135629708.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (135629729) 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, 67814874 + 67814875.

It is an arithmetic number, because the mean of its divisors is an integer number (67814875).

Almost surely, 2^135629749 is an apocalyptic number.

It is an amenable number.

135629749 is a deficient number, since it is larger than the sum of its proper divisors (1).

135629749 is an equidigital number, since it uses as much as digits as its factorization.

135629749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 408240, while the sum is 46.

The square root of 135629749 is about 11646.0185900590. The cubic root of 135629749 is about 513.7892177267.

The spelling of 135629749 in words is "one hundred thirty-five million, six hundred twenty-nine thousand, seven hundred forty-nine".