136783449 has 24 divisors (see below), whose sum is σ = 217462752. Its totient is φ = 82158720.

The previous prime is 136783441. The next prime is 136783481. The reversal of 136783449 is 944387631.

136783449 is a `hidden beast` number, since 136 + 78 + 3 + 449 = 666.

It is not a de Polignac number, because 136783449 - 2³ = 136783441 is a prime.

It is not an unprimeable number, because it can be changed into a prime (136783441) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5074 + ... + 17300.

It is an arithmetic number, because the mean of its divisors is an integer number (9060948).

Almost surely, 2^136783449 is an apocalyptic number.

It is an amenable number.

136783449 is a deficient number, since it is larger than the sum of its proper divisors (80679303).

136783449 is a wasteful number, since it uses less digits than its factorization.

136783449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12357 (or 12354 counting only the distinct ones).

The product of its digits is 435456, while the sum is 45.

The square root of 136783449 is about 11695.4456520476. The cubic root of 136783449 is about 515.2419123009.

The spelling of 136783449 in words is "one hundred thirty-six million, seven hundred eighty-three thousand, four hundred forty-nine".