135557949 has 8 divisors (see below), whose sum is σ = 191376000. Its totient is φ = 85055936.

The previous prime is 135557927. The next prime is 135557963. The reversal of 135557949 is 949755531.

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

It is a cyclic number.

It is not a de Polignac number, because 135557949 - 2¹⁷ = 135426877 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 135557898 and 135557907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135557969) 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 in 7 ways as a sum of consecutive naturals, for example, 1328949 + ... + 1329050.

It is an arithmetic number, because the mean of its divisors is an integer number (23922000).

Almost surely, 2^135557949 is an apocalyptic number.

It is an amenable number.

135557949 is a deficient number, since it is larger than the sum of its proper divisors (55818051).

135557949 is a wasteful number, since it uses less digits than its factorization.

135557949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2658019.

The product of its digits is 850500, while the sum is 48.

The square root of 135557949 is about 11642.9355834343. The cubic root of 135557949 is about 513.6985380696.

The spelling of 135557949 in words is "one hundred thirty-five million, five hundred fifty-seven thousand, nine hundred forty-nine".