139901285 has 8 divisors (see below), whose sum is σ = 167947296. Its totient is φ = 111877200.

The previous prime is 139901269. The next prime is 139901299. The reversal of 139901285 is 582109931.

139901285 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 139901285 - 2⁴ = 139901269 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent 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, 16802 + ... + 23708.

It is an arithmetic number, because the mean of its divisors is an integer number (20993412).

Almost surely, 2^139901285 is an apocalyptic number.

It is an amenable number.

139901285 is a deficient number, since it is larger than the sum of its proper divisors (28046011).

139901285 is an equidigital number, since it uses as much as digits as its factorization.

139901285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10963.

The product of its (nonzero) digits is 19440, while the sum is 38.

The square root of 139901285 is about 11827.9873604938. The cubic root of 139901285 is about 519.1273393336.

The spelling of 139901285 in words is "one hundred thirty-nine million, nine hundred one thousand, two hundred eighty-five".