136747009 has 16 divisors (see below), whose sum is σ = 168340480. Its totient is φ = 108455760.

The previous prime is 136747007. The next prime is 136747027. The reversal of 136747009 is 900747631.

It is not a de Polignac number, because 136747009 - 2¹ = 136747007 is a prime.

It is not an unprimeable number, because it can be changed into a prime (136747003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6237 + ... + 17674.

It is an arithmetic number, because the mean of its divisors is an integer number (10521280).

Almost surely, 2^136747009 is an apocalyptic number.

136747009 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

136747009 is a deficient number, since it is larger than the sum of its proper divisors (31593471).

136747009 is a wasteful number, since it uses less digits than its factorization.

136747009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23980.

The product of its (nonzero) digits is 31752, while the sum is 37.

The square root of 136747009 is about 11693.8876769020. The cubic root of 136747009 is about 515.1961536389.

The spelling of 136747009 in words is "one hundred thirty-six million, seven hundred forty-seven thousand, nine".