135404623 has 8 divisors (see below), whose sum is σ = 138258288. Its totient is φ = 132580224.

The previous prime is 135404617. The next prime is 135404653. The reversal of 135404623 is 326404531.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-135404623 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 135404591 and 135404600.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135404653) 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 in 7 ways as a sum of consecutive naturals, for example, 2161 + ... + 16597.

It is an arithmetic number, because the mean of its divisors is an integer number (17282286).

Almost surely, 2^135404623 is an apocalyptic number.

135404623 is a deficient number, since it is larger than the sum of its proper divisors (2853665).

135404623 is a wasteful number, since it uses less digits than its factorization.

135404623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14633.

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 135404623 is about 11636.3492127041. The cubic root of 135404623 is about 513.5047880731.

The spelling of 135404623 in words is "one hundred thirty-five million, four hundred four thousand, six hundred twenty-three".