139349461 has 4 divisors (see below), whose sum is σ = 139419072. Its totient is φ = 139279852.

The previous prime is 139349423. The next prime is 139349467. The reversal of 139349461 is 164943931.

139349461 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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.

It is a cyclic number.

It is not a de Polignac number, because 139349461 - 2¹⁵ = 139316693 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139349467) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31711 + ... + 35836.

It is an arithmetic number, because the mean of its divisors is an integer number (34854768).

Almost surely, 2^139349461 is an apocalyptic number.

It is an amenable number.

139349461 is a deficient number, since it is larger than the sum of its proper divisors (69611).

139349461 is an equidigital number, since it uses as much as digits as its factorization.

139349461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69610.

The product of its digits is 69984, while the sum is 40.

The square root of 139349461 is about 11804.6372667694. The cubic root of 139349461 is about 518.4438945810.

The spelling of 139349461 in words is "one hundred thirty-nine million, three hundred forty-nine thousand, four hundred sixty-one".