139901286 has 16 divisors (see below), whose sum is σ = 319774464. Its totient is φ = 39971784.

The previous prime is 139901269. The next prime is 139901299. The reversal of 139901286 is 682109931.

139901286 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 1665450 + ... + 1665533.

It is an arithmetic number, because the mean of its divisors is an integer number (19985904).

Almost surely, 2^139901286 is an apocalyptic number.

139901286 is an abundant number, since it is smaller than the sum of its proper divisors (179873178).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

139901286 is a wasteful number, since it uses less digits than its factorization.

139901286 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3330995.

The product of its (nonzero) digits is 23328, while the sum is 39.

The square root of 139901286 is about 11827.9874027664. The cubic root of 139901286 is about 519.1273405705.

The spelling of 139901286 in words is "one hundred thirty-nine million, nine hundred one thousand, two hundred eighty-six".