139853247 has 8 divisors (see below), whose sum is σ = 190438656. Its totient is φ = 91251672.

The previous prime is 139853227. The next prime is 139853249. The reversal of 139853247 is 742358931.

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

It is not a de Polignac number, because 139853247 - 2⁸ = 139852991 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 139853199 and 139853208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139853249) 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 7 ways as a sum of consecutive naturals, for example, 495793 + ... + 496074.

It is an arithmetic number, because the mean of its divisors is an integer number (23804832).

Almost surely, 2^139853247 is an apocalyptic number.

139853247 is a deficient number, since it is larger than the sum of its proper divisors (50585409).

139853247 is an equidigital number, since it uses as much as digits as its factorization.

139853247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 991917.

The product of its digits is 181440, while the sum is 42.

The square root of 139853247 is about 11825.9564940854. The cubic root of 139853247 is about 519.0679148282.

It can be divided in two parts, 1398 and 53247, that added together give a palindrome (54645).

The spelling of 139853247 in words is "one hundred thirty-nine million, eight hundred fifty-three thousand, two hundred forty-seven".