139998607 has 8 divisors (see below), whose sum is σ = 160837632. Its totient is φ = 119369400.

The previous prime is 139998589. The next prime is 139998637. The reversal of 139998607 is 706899931.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 139998607 - 2¹⁹ = 139474319 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 (139998637) 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 7 ways as a sum of consecutive naturals, for example, 51019 + ... + 53692.

It is an arithmetic number, because the mean of its divisors is an integer number (20104704).

Almost surely, 2^139998607 is an apocalyptic number.

139998607 is a deficient number, since it is larger than the sum of its proper divisors (20839025).

139998607 is a wasteful number, since it uses less digits than its factorization.

139998607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104909.

The product of its (nonzero) digits is 734832, while the sum is 52.

The square root of 139998607 is about 11832.1007010590. The cubic root of 139998607 is about 519.2476880022.

The spelling of 139998607 in words is "one hundred thirty-nine million, nine hundred ninety-eight thousand, six hundred seven".