136356989 has 8 divisors (see below), whose sum is σ = 138600000. Its totient is φ = 134129952.

The previous prime is 136356937. The next prime is 136357027. The reversal of 136356989 is 989653631.

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 136356989 - 2¹⁶ = 136291453 is a prime.

It is a super-2 number, since 2×136356989² = 37186456898292242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136356889) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13862 + ... + 21560.

It is an arithmetic number, because the mean of its divisors is an integer number (17325000).

Almost surely, 2^136356989 is an apocalyptic number.

It is an amenable number.

136356989 is a deficient number, since it is larger than the sum of its proper divisors (2243011).

136356989 is an equidigital number, since it uses as much as digits as its factorization.

136356989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7987.

The product of its digits is 1049760, while the sum is 50.

The square root of 136356989 is about 11677.1995358476. The cubic root of 136356989 is about 514.7058854152.

The spelling of 136356989 in words is "one hundred thirty-six million, three hundred fifty-six thousand, nine hundred eighty-nine".