136409453 has 2 divisors, whose sum is σ = 136409454. Its totient is φ = 136409452.

The previous prime is 136409447. The next prime is 136409477. The reversal of 136409453 is 354904631.

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., 103999204 + 32410249 = 10198^2 + 5693^2 .

It is a cyclic number.

It is not a de Polignac number, because 136409453 - 2⁸ = 136409197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (136409423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68204726 + 68204727.

It is an arithmetic number, because the mean of its divisors is an integer number (68204727).

Almost surely, 2^136409453 is an apocalyptic number.

It is an amenable number.

136409453 is a deficient number, since it is larger than the sum of its proper divisors (1).

136409453 is an equidigital number, since it uses as much as digits as its factorization.

136409453 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 38880, while the sum is 35.

The square root of 136409453 is about 11679.4457488359. The cubic root of 136409453 is about 514.7718887966.

The spelling of 136409453 in words is "one hundred thirty-six million, four hundred nine thousand, four hundred fifty-three".