139018943 has 8 divisors (see below), whose sum is σ = 159230112. Its totient is φ = 118895616.

The previous prime is 139018921. The next prime is 139018961. The reversal of 139018943 is 349810931.

It is a happy number.

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

It is not a de Polignac number, because 139018943 - 2¹⁶ = 138953407 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 139018897 and 139018906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139018993) 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 7 ways as a sum of consecutive naturals, for example, 18530 + ... + 24927.

It is an arithmetic number, because the mean of its divisors is an integer number (19903764).

Almost surely, 2^139018943 is an apocalyptic number.

139018943 is a deficient number, since it is larger than the sum of its proper divisors (20211169).

139018943 is an equidigital number, since it uses as much as digits as its factorization.

139018943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43921.

The product of its (nonzero) digits is 23328, while the sum is 38.

The square root of 139018943 is about 11790.6294573275. The cubic root of 139018943 is about 518.0336772428.

The spelling of 139018943 in words is "one hundred thirty-nine million, eighteen thousand, nine hundred forty-three".