139433347 has 4 divisors (see below), whose sum is σ = 139457920. Its totient is φ = 139408776.

The previous prime is 139433321. The next prime is 139433351. The reversal of 139433347 is 743334931.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 139433347 - 2¹⁵ = 139400579 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (139433377) 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 3 ways as a sum of consecutive naturals, for example, 1054 + ... + 16732.

It is an arithmetic number, because the mean of its divisors is an integer number (34864480).

Almost surely, 2^139433347 is an apocalyptic number.

139433347 is a deficient number, since it is larger than the sum of its proper divisors (24573).

139433347 is an equidigital number, since it uses as much as digits as its factorization.

139433347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24572.

The product of its digits is 81648, while the sum is 37.

The square root of 139433347 is about 11808.1898274037. The cubic root of 139433347 is about 518.5479051751.

The spelling of 139433347 in words is "one hundred thirty-nine million, four hundred thirty-three thousand, three hundred forty-seven".