139053805 has 12 divisors (see below), whose sum is σ = 183413916. Its totient is φ = 101129600.

The previous prime is 139053797. The next prime is 139053839. The reversal of 139053805 is 508350931.

139053805 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 106461124 + 32592681 = 10318^2 + 5709^2 .

It is not a de Polignac number, because 139053805 - 2³ = 139053797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 114316 + ... + 115525.

It is an arithmetic number, because the mean of its divisors is an integer number (15284493).

Almost surely, 2^139053805 is an apocalyptic number.

It is an amenable number.

139053805 is a deficient number, since it is larger than the sum of its proper divisors (44360111).

139053805 is a wasteful number, since it uses less digits than its factorization.

139053805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229868 (or 229857 counting only the distinct ones).

The product of its (nonzero) digits is 16200, while the sum is 34.

The square root of 139053805 is about 11792.1077420451. The cubic root of 139053805 is about 518.0769763315.

The spelling of 139053805 in words is "one hundred thirty-nine million, fifty-three thousand, eight hundred five".