136222993 has 4 divisors (see below), whose sum is σ = 138256240. Its totient is φ = 134189748.

The previous prime is 136222991. The next prime is 136223029. The reversal of 136222993 is 399222631.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 136222993 - 2¹ = 136222991 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (136222991) 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 3 ways as a sum of consecutive naturals, for example, 1016523 + ... + 1016656.

It is an arithmetic number, because the mean of its divisors is an integer number (34564060).

Almost surely, 2^136222993 is an apocalyptic number.

It is an amenable number.

136222993 is a deficient number, since it is larger than the sum of its proper divisors (2033247).

136222993 is an equidigital number, since it uses as much as digits as its factorization.

136222993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2033246.

The product of its digits is 34992, while the sum is 37.

The square root of 136222993 is about 11671.4606198196. The cubic root of 136222993 is about 514.5372322005.

The spelling of 136222993 in words is "one hundred thirty-six million, two hundred twenty-two thousand, nine hundred ninety-three".