139435436 has 12 divisors (see below), whose sum is σ = 278870928. Its totient is φ = 59758032.

The previous prime is 139435423. The next prime is 139435441. The reversal of 139435436 is 634534931.

139435436 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 139435436.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2489891 + ... + 2489946.

It is an arithmetic number, because the mean of its divisors is an integer number (23239244).

Almost surely, 2^139435436 is an apocalyptic number.

It is an amenable number.

139435436 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

139435436 is a wasteful number, since it uses less digits than its factorization.

139435436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4979848 (or 4979846 counting only the distinct ones).

The product of its digits is 116640, while the sum is 38.

The square root of 139435436 is about 11808.2782826287. The cubic root of 139435436 is about 518.5504948023.

The spelling of 139435436 in words is "one hundred thirty-nine million, four hundred thirty-five thousand, four hundred thirty-six".