136839305 has 8 divisors (see below), whose sum is σ = 171346752. Its totient is φ = 104711728.

The previous prime is 136839293. The next prime is 136839317. The reversal of 136839305 is 503938631.

It is an interprime number because it is at equal distance from previous prime (136839293) and next prime (136839317).

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 136839305 - 2¹⁴ = 136822921 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 594839 + ... + 595068.

It is an arithmetic number, because the mean of its divisors is an integer number (21418344).

Almost surely, 2^136839305 is an apocalyptic number.

It is an amenable number.

136839305 is a deficient number, since it is larger than the sum of its proper divisors (34507447).

136839305 is a wasteful number, since it uses less digits than its factorization.

136839305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1189935.

The product of its (nonzero) digits is 58320, while the sum is 38.

The square root of 136839305 is about 11697.8333463937. The cubic root of 136839305 is about 515.3120363692.

The spelling of 136839305 in words is "one hundred thirty-six million, eight hundred thirty-nine thousand, three hundred five".