139284839649 has 8 divisors (see below), whose sum is σ = 185883973120. Its totient is φ = 92771132976.

The previous prime is 139284839599. The next prime is 139284839657. The reversal of 139284839649 is 946938482931.

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

It is not a de Polignac number, because 139284839649 - 2⁷ = 139284839521 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 139284839649.

It is not an unprimeable number, because it can be changed into a prime (139284839849) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21352894 + ... + 21359415.

It is an arithmetic number, because the mean of its divisors is an integer number (23235496640).

Almost surely, 2^139284839649 is an apocalyptic number.

It is an amenable number.

139284839649 is a deficient number, since it is larger than the sum of its proper divisors (46599133471).

139284839649 is a wasteful number, since it uses less digits than its factorization.

139284839649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42713399.

The product of its digits is 80621568, while the sum is 66.

The spelling of 139284839649 in words is "one hundred thirty-nine billion, two hundred eighty-four million, eight hundred thirty-nine thousand, six hundred forty-nine".