139389441 has 8 divisors (see below), whose sum is σ = 186107040. Its totient is φ = 92799072.

The previous prime is 139389431. The next prime is 139389461. The reversal of 139389441 is 144983931.

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

It is not a de Polignac number, because 139389441 - 2¹⁵ = 139356673 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 139389393 and 139389402.

It is not an unprimeable number, because it can be changed into a prime (139389421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29220 + ... + 33653.

It is an arithmetic number, because the mean of its divisors is an integer number (23263380).

Almost surely, 2^139389441 is an apocalyptic number.

It is an amenable number.

139389441 is a deficient number, since it is larger than the sum of its proper divisors (46717599).

139389441 is an equidigital number, since it uses as much as digits as its factorization.

139389441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63615.

The product of its digits is 93312, while the sum is 42.

The square root of 139389441 is about 11806.3305476342. The cubic root of 139389441 is about 518.4934711511.

The spelling of 139389441 in words is "one hundred thirty-nine million, three hundred eighty-nine thousand, four hundred forty-one".