139486286 has 4 divisors (see below), whose sum is σ = 209229432. Its totient is φ = 69743142.

The previous prime is 139486273. The next prime is 139486313. The reversal of 139486286 is 682684931.

139486286 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 682684931 = 107 ⋅6380233.

It is a self number, because there is not a number n which added to its sum of digits gives 139486286.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34871570 + ... + 34871573.

It is an arithmetic number, because the mean of its divisors is an integer number (52307358).

Almost surely, 2^139486286 is an apocalyptic number.

139486286 is a deficient number, since it is larger than the sum of its proper divisors (69743146).

139486286 is an equidigital number, since it uses as much as digits as its factorization.

139486286 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69743145.

The product of its digits is 497664, while the sum is 47.

The square root of 139486286 is about 11810.4312368347. The cubic root of 139486286 is about 518.6135229886.

The spelling of 139486286 in words is "one hundred thirty-nine million, four hundred eighty-six thousand, two hundred eighty-six".