139608057 has 8 divisors (see below), whose sum is σ = 190473184. Its totient is φ = 90907488.

The previous prime is 139608043. The next prime is 139608109. The reversal of 139608057 is 750806931.

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

It is not a de Polignac number, because 139608057 - 2¹¹ = 139606009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (139608037) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 540988 + ... + 541245.

It is an arithmetic number, because the mean of its divisors is an integer number (23809148).

Almost surely, 2^139608057 is an apocalyptic number.

It is an amenable number.

139608057 is a deficient number, since it is larger than the sum of its proper divisors (50865127).

139608057 is a wasteful number, since it uses less digits than its factorization.

139608057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1082279.

The product of its (nonzero) digits is 45360, while the sum is 39.

The square root of 139608057 is about 11815.5853430966. The cubic root of 139608057 is about 518.7643949748.

The spelling of 139608057 in words is "one hundred thirty-nine million, six hundred eight thousand, fifty-seven".