139260685 has 16 divisors (see below), whose sum is σ = 177273792. Its totient is φ = 104659200.

The previous prime is 139260683. The next prime is 139260691. The reversal of 139260685 is 586062931.

It is not a de Polignac number, because 139260685 - 2¹ = 139260683 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139260683) 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 15 ways as a sum of consecutive naturals, for example, 57550 + ... + 59920.

It is an arithmetic number, because the mean of its divisors is an integer number (11079612).

Almost surely, 2^139260685 is an apocalyptic number.

It is an amenable number.

139260685 is a deficient number, since it is larger than the sum of its proper divisors (38013107).

139260685 is a wasteful number, since it uses less digits than its factorization.

139260685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3084.

The product of its (nonzero) digits is 77760, while the sum is 40.

The square root of 139260685 is about 11800.8764505015. The cubic root of 139260685 is about 518.3337753833. Note that the first 3 decimals are identical.

The spelling of 139260685 in words is "one hundred thirty-nine million, two hundred sixty thousand, six hundred eighty-five".