139304941 has 4 divisors (see below), whose sum is σ = 146636800. Its totient is φ = 131973084.

The previous prime is 139304939. The next prime is 139304947. The reversal of 139304941 is 149403931.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 149403931 = 79 ⋅1891189.

It is a cyclic number.

It is not a de Polignac number, because 139304941 - 2¹ = 139304939 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 139304897 and 139304906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139304947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3665901 + ... + 3665938.

It is an arithmetic number, because the mean of its divisors is an integer number (36659200).

Almost surely, 2^139304941 is an apocalyptic number.

It is an amenable number.

139304941 is a deficient number, since it is larger than the sum of its proper divisors (7331859).

139304941 is an equidigital number, since it uses as much as digits as its factorization.

139304941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7331858.

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 139304941 is about 11802.7514165130. The cubic root of 139304941 is about 518.3886770952.

The spelling of 139304941 in words is "one hundred thirty-nine million, three hundred four thousand, nine hundred forty-one".