139325985 has 24 divisors (see below), whose sum is σ = 243409920. Its totient is φ = 73719072.

The previous prime is 139325981. The next prime is 139325987. The reversal of 139325985 is 589523931.

139325985 is a `hidden beast` number, since 1 + 393 + 259 + 8 + 5 = 666.

It is not a de Polignac number, because 139325985 - 2² = 139325981 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 139325985.

It is not an unprimeable number, because it can be changed into a prime (139325981) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6475 + ... + 17904.

It is an arithmetic number, because the mean of its divisors is an integer number (10142080).

Almost surely, 2^139325985 is an apocalyptic number.

139325985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

139325985 is a deficient number, since it is larger than the sum of its proper divisors (104083935).

139325985 is a wasteful number, since it uses less digits than its factorization.

139325985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24517 (or 24514 counting only the distinct ones).

The product of its digits is 291600, while the sum is 45.

The square root of 139325985 is about 11803.6428698940. The cubic root of 139325985 is about 518.4147791176.

The spelling of 139325985 in words is "one hundred thirty-nine million, three hundred twenty-five thousand, nine hundred eighty-five".