139651485 has 16 divisors (see below), whose sum is σ = 223625664. Its totient is φ = 74419712.

The previous prime is 139651483. The next prime is 139651507. The reversal of 139651485 is 584156931.

139651485 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 139651485 - 2¹ = 139651483 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139651483) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19789 + ... + 25901.

It is an arithmetic number, because the mean of its divisors is an integer number (13976604).

Almost surely, 2^139651485 is an apocalyptic number.

139651485 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

139651485 is a deficient number, since it is larger than the sum of its proper divisors (83974179).

139651485 is a wasteful number, since it uses less digits than its factorization.

139651485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7644.

The product of its digits is 129600, while the sum is 42.

The square root of 139651485 is about 11817.4229424185. The cubic root of 139651485 is about 518.8181802291.

The spelling of 139651485 in words is "one hundred thirty-nine million, six hundred fifty-one thousand, four hundred eighty-five".