139689410 has 32 divisors (see below), whose sum is σ = 296635392. Its totient is φ = 46347840.

The previous prime is 139689383. The next prime is 139689427. The reversal of 139689410 is 14986931.

139689410 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-3 number, since 3×139689410³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30017 + ... + 34356.

It is an arithmetic number, because the mean of its divisors is an integer number (9269856).

Almost surely, 2^139689410 is an apocalyptic number.

139689410 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

139689410 is an abundant number, since it is smaller than the sum of its proper divisors (156945982).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

139689410 is a wasteful number, since it uses less digits than its factorization.

139689410 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64418.

The product of its (nonzero) digits is 46656, while the sum is 41.

The square root of 139689410 is about 11819.0274557596. The cubic root of 139689410 is about 518.8651409389.

The spelling of 139689410 in words is "one hundred thirty-nine million, six hundred eighty-nine thousand, four hundred ten".