139609683 has 16 divisors (see below), whose sum is σ = 213962400. Its totient is φ = 89863200.

The previous prime is 139609681. The next prime is 139609711. The reversal of 139609683 is 386906931.

139609683 is a `hidden beast` number, since 1 + 39 + 609 + 6 + 8 + 3 = 666.

It is not a de Polignac number, because 139609683 - 2¹ = 139609681 is a prime.

It is a super-3 number, since 3×139609683³ (a number of 25 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (139609681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 88368 + ... + 89933.

It is an arithmetic number, because the mean of its divisors is an integer number (13372650).

Almost surely, 2^139609683 is an apocalyptic number.

139609683 is a deficient number, since it is larger than the sum of its proper divisors (74352717).

139609683 is a wasteful number, since it uses less digits than its factorization.

139609683 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178339 (or 178333 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 45.

The square root of 139609683 is about 11815.6541503211. The cubic root of 139609683 is about 518.7664089647.

The spelling of 139609683 in words is "one hundred thirty-nine million, six hundred nine thousand, six hundred eighty-three".