139486442 has 8 divisors (see below), whose sum is σ = 210827232. Its totient is φ = 69210700.

The previous prime is 139486439. The next prime is 139486507. The reversal of 139486442 is 244684931.

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

It is a self number, because there is not a number n which added to its sum of digits gives 139486442.

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, 265934 + ... + 266457.

It is an arithmetic number, because the mean of its divisors is an integer number (26353404).

Almost surely, 2^139486442 is an apocalyptic number.

139486442 is a deficient number, since it is larger than the sum of its proper divisors (71340790).

139486442 is a wasteful number, since it uses less digits than its factorization.

139486442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 532524.

The product of its digits is 165888, while the sum is 41.

The square root of 139486442 is about 11810.4378411641. The cubic root of 139486442 is about 518.6137163259.

The spelling of 139486442 in words is "one hundred thirty-nine million, four hundred eighty-six thousand, four hundred forty-two".