139488286 has 8 divisors (see below), whose sum is σ = 239122800. Its totient is φ = 59780688.

The previous prime is 139488277. The next prime is 139488337. The reversal of 139488286 is 682884931.

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

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 4981711 + ... + 4981738.

It is an arithmetic number, because the mean of its divisors is an integer number (29890350).

Almost surely, 2^139488286 is an apocalyptic number.

139488286 is a deficient number, since it is larger than the sum of its proper divisors (99634514).

139488286 is an equidigital number, since it uses as much as digits as its factorization.

139488286 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9963458.

The product of its digits is 663552, while the sum is 49.

The square root of 139488286 is about 11810.5159074445. The cubic root of 139488286 is about 518.6160016602.

The spelling of 139488286 in words is "one hundred thirty-nine million, four hundred eighty-eight thousand, two hundred eighty-six".