139608501 has 4 divisors (see below), whose sum is σ = 186144672. Its totient is φ = 93072332.

The previous prime is 139608499. The next prime is 139608509. The reversal of 139608501 is 105806931.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 139608501 - 2¹ = 139608499 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139608509) 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 3 ways as a sum of consecutive naturals, for example, 23268081 + ... + 23268086.

It is an arithmetic number, because the mean of its divisors is an integer number (46536168).

Almost surely, 2^139608501 is an apocalyptic number.

It is an amenable number.

139608501 is a deficient number, since it is larger than the sum of its proper divisors (46536171).

139608501 is an equidigital number, since it uses as much as digits as its factorization.

139608501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46536170.

The product of its (nonzero) digits is 6480, while the sum is 33.

The square root of 139608501 is about 11815.6041318250. The cubic root of 139608501 is about 518.7649449219.

The spelling of 139608501 in words is "one hundred thirty-nine million, six hundred eight thousand, five hundred one".