136393984 has 18 divisors (see below), whose sum is σ = 272255690. Its totient is φ = 68196864.

The previous prime is 136393981. The next prime is 136393991. The reversal of 136393984 is 489393631.

It can be written as a sum of positive squares in only one way, i.e., 97456384 + 38937600 = 9872^2 + 6240^2 .

It is a plaindrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136393981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 266139 + ... + 266650.

Almost surely, 2^136393984 is an apocalyptic number.

It is an amenable number.

136393984 is a deficient number, since it is larger than the sum of its proper divisors (135861706).

136393984 is an frugal number, since it uses more digits than its factorization.

136393984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 532805 (or 532791 counting only the distinct ones).

The product of its digits is 419904, while the sum is 46.

The square root of 136393984 is about 11678.7834982930. The cubic root of 136393984 is about 514.7524294722.

The spelling of 136393984 in words is "one hundred thirty-six million, three hundred ninety-three thousand, nine hundred eighty-four".