139851616 has 24 divisors (see below), whose sum is σ = 275607360. Its totient is φ = 69856128.

The previous prime is 139851599. The next prime is 139851617. The reversal of 139851616 is 616158931.

139851616 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×139851616² = 39116948995622912, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139851617) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48750 + ... + 51538.

It is an arithmetic number, because the mean of its divisors is an integer number (11483640).

Almost surely, 2^139851616 is an apocalyptic number.

139851616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

139851616 is a deficient number, since it is larger than the sum of its proper divisors (135755744).

139851616 is a wasteful number, since it uses less digits than its factorization.

139851616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4366 (or 4358 counting only the distinct ones).

The product of its digits is 38880, while the sum is 40.

The square root of 139851616 is about 11825.8875354030. The cubic root of 139851616 is about 519.0658969915.

The spelling of 139851616 in words is "one hundred thirty-nine million, eight hundred fifty-one thousand, six hundred sixteen".