136990009 has 8 divisors (see below), whose sum is σ = 149730560. Its totient is φ = 124564176.

The previous prime is 136990003. The next prime is 136990039. The reversal of 136990009 is 900099631.

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

It is a cyclic number.

It is not a de Polignac number, because 136990009 - 2⁹ = 136989497 is a prime.

It is a super-3 number, since 3×136990009³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 136990009.

It is not an unprimeable number, because it can be changed into a prime (136990003) 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, 77769 + ... + 79510.

It is an arithmetic number, because the mean of its divisors is an integer number (18716320).

Almost surely, 2^136990009 is an apocalyptic number.

It is an amenable number.

136990009 is a deficient number, since it is larger than the sum of its proper divisors (12740551).

136990009 is a wasteful number, since it uses less digits than its factorization.

136990009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157359.

The product of its (nonzero) digits is 13122, while the sum is 37.

The square root of 136990009 is about 11704.2731085702. The cubic root of 136990009 is about 515.5011416198.

It can be divided in two parts, 1369 and 90009, that multiplied together give a palindrome (123222321).

The spelling of 136990009 in words is "one hundred thirty-six million, nine hundred ninety thousand, nine".