136808949 has 8 divisors (see below), whose sum is σ = 192012640. Its totient is φ = 86405616.

The previous prime is 136808941. The next prime is 136808957. The reversal of 136808949 is 949808631.

136808949 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (136808941) and next prime (136808957).

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

It is not a de Polignac number, because 136808949 - 2³ = 136808941 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 136808898 and 136808907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136808941) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1200022 + ... + 1200135.

It is an arithmetic number, because the mean of its divisors is an integer number (24001580).

Almost surely, 2^136808949 is an apocalyptic number.

136808949 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

136808949 is a deficient number, since it is larger than the sum of its proper divisors (55203691).

136808949 is a wasteful number, since it uses less digits than its factorization.

136808949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2400179.

The product of its (nonzero) digits is 373248, while the sum is 48.

The square root of 136808949 is about 11696.5357691925. The cubic root of 136808949 is about 515.2739284853.

The spelling of 136808949 in words is "one hundred thirty-six million, eight hundred eight thousand, nine hundred forty-nine".