136372209 has 8 divisors (see below), whose sum is σ = 182196000. Its totient is φ = 90731616.

The previous prime is 136372207. The next prime is 136372211. The reversal of 136372209 is 902273631.

It is a happy number.

136372209 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 (136372207) and next prime (136372211).

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

It is not a de Polignac number, because 136372209 - 2¹ = 136372207 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 136372209.

It is not an unprimeable number, because it can be changed into a prime (136372207) 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, 44052 + ... + 47045.

It is an arithmetic number, because the mean of its divisors is an integer number (22774500).

Almost surely, 2^136372209 is an apocalyptic number.

It is an amenable number.

136372209 is a deficient number, since it is larger than the sum of its proper divisors (45823791).

136372209 is an equidigital number, since it uses as much as digits as its factorization.

136372209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91599.

The product of its (nonzero) digits is 13608, while the sum is 33.

The square root of 136372209 is about 11677.8512150138. The cubic root of 136372209 is about 514.7250349827.

The spelling of 136372209 in words is "one hundred thirty-six million, three hundred seventy-two thousand, two hundred nine".