139144335 has 16 divisors (see below), whose sum is σ = 242870400. Its totient is φ = 67463840.

The previous prime is 139144333. The next prime is 139144339. The reversal of 139144335 is 533441931.

It is a happy number.

It is not a de Polignac number, because 139144335 - 2¹ = 139144333 is a prime.

It is a super-2 number, since 2×139144335² = 38722291925184450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a junction number, because it is equal to n+sod(n) for n = 139144296 and 139144305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139144331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 421485 + ... + 421814.

It is an arithmetic number, because the mean of its divisors is an integer number (15179400).

Almost surely, 2^139144335 is an apocalyptic number.

139144335 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

139144335 is a deficient number, since it is larger than the sum of its proper divisors (103726065).

139144335 is a wasteful number, since it uses less digits than its factorization.

139144335 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 843318.

The product of its digits is 19440, while the sum is 33.

The square root of 139144335 is about 11795.9457018079. The cubic root of 139144335 is about 518.1893820631.

The spelling of 139144335 in words is "one hundred thirty-nine million, one hundred forty-four thousand, three hundred thirty-five".