139432941 has 16 divisors (see below), whose sum is σ = 208700800. Its totient is φ = 91995264.

The previous prime is 139432939. The next prime is 139432949. The reversal of 139432941 is 149234931.

139432941 is a `hidden beast` number, since 139 + 432 + 94 + 1 = 666.

It is not a de Polignac number, because 139432941 - 2¹ = 139432939 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 139432896 and 139432905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139432949) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24001 + ... + 29238.

It is an arithmetic number, because the mean of its divisors is an integer number (13043800).

Almost surely, 2^139432941 is an apocalyptic number.

It is an amenable number.

139432941 is a deficient number, since it is larger than the sum of its proper divisors (69267859).

139432941 is an equidigital number, since it uses as much as digits as its factorization.

139432941 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53345 (or 53339 counting only the distinct ones).

The product of its digits is 23328, while the sum is 36.

The square root of 139432941 is about 11808.1726359331. The cubic root of 139432941 is about 518.5474018745.

The spelling of 139432941 in words is "one hundred thirty-nine million, four hundred thirty-two thousand, nine hundred forty-one".