139533685 has 8 divisors (see below), whose sum is σ = 167510016. Its totient is φ = 111580560.

The previous prime is 139533631. The next prime is 139533689. The reversal of 139533685 is 586335931.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 139533685 - 2¹⁵ = 139500917 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 (139533689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12940 + ... + 21130.

It is an arithmetic number, because the mean of its divisors is an integer number (20938752).

Almost surely, 2^139533685 is an apocalyptic number.

It is an amenable number.

139533685 is a deficient number, since it is larger than the sum of its proper divisors (27976331).

139533685 is an equidigital number, since it uses as much as digits as its factorization.

139533685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11603.

The product of its digits is 291600, while the sum is 43.

The square root of 139533685 is about 11812.4377247036. The cubic root of 139533685 is about 518.6722598944.

The spelling of 139533685 in words is "one hundred thirty-nine million, five hundred thirty-three thousand, six hundred eighty-five".