136998838 has 4 divisors (see below), whose sum is σ = 205498260. Its totient is φ = 68499418.

The previous prime is 136998821. The next prime is 136998839. The reversal of 136998838 is 838899631.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×136998838² = 37537363226700488, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136998839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34249708 + ... + 34249711.

It is an arithmetic number, because the mean of its divisors is an integer number (51374565).

Almost surely, 2^136998838 is an apocalyptic number.

136998838 is a deficient number, since it is larger than the sum of its proper divisors (68499422).

136998838 is an equidigital number, since it uses as much as digits as its factorization.

136998838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68499421.

The product of its digits is 2239488, while the sum is 55.

The square root of 136998838 is about 11704.6502724345. The cubic root of 136998838 is about 515.5122160571.

The spelling of 136998838 in words is "one hundred thirty-six million, nine hundred ninety-eight thousand, eight hundred thirty-eight".