139853930249 has 24 divisors (see below), whose sum is σ = 168021438912. Its totient is φ = 115211400480.

The previous prime is 139853930221. The next prime is 139853930257. The reversal of 139853930249 is 942039358931.

139853930249 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-139853930249 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 139853930194 and 139853930203.

It is not an unprimeable number, because it can be changed into a prime (139853930219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 674294 + ... + 856959.

It is an arithmetic number, because the mean of its divisors is an integer number (7000893288).

Almost surely, 2^139853930249 is an apocalyptic number.

139853930249 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

139853930249 is a deficient number, since it is larger than the sum of its proper divisors (28167508663).

139853930249 is a wasteful number, since it uses less digits than its factorization.

139853930249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1531325 (or 1531306 counting only the distinct ones).

The product of its (nonzero) digits is 6298560, while the sum is 56.

The spelling of 139853930249 in words is "one hundred thirty-nine billion, eight hundred fifty-three million, nine hundred thirty thousand, two hundred forty-nine".