136929437 has 8 divisors (see below), whose sum is σ = 139848120. Its totient is φ = 134041600.

The previous prime is 136929431. The next prime is 136929439. The reversal of 136929437 is 734929631.

It can be written as a sum of positive squares in 4 ways, for example, as 14295961 + 122633476 = 3781^2 + 11074^2 .

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 136929437 - 2¹⁰ = 136928413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (136929431) 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, 1373 + ... + 16605.

It is an arithmetic number, because the mean of its divisors is an integer number (17481015).

Almost surely, 2^136929437 is an apocalyptic number.

It is an amenable number.

136929437 is a deficient number, since it is larger than the sum of its proper divisors (2918683).

136929437 is a wasteful number, since it uses less digits than its factorization.

136929437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15423.

The product of its digits is 244944, while the sum is 44.

The square root of 136929437 is about 11701.6852205142. The cubic root of 136929437 is about 515.4251517996.

The spelling of 136929437 in words is "one hundred thirty-six million, nine hundred twenty-nine thousand, four hundred thirty-seven".