139463856 has 100 divisors (see below), whose sum is σ = 461342992. Its totient is φ = 39844224.

The previous prime is 139463827. The next prime is 139463867. The reversal of 139463856 is 658364931.

139463856 is a `hidden beast` number, since 1 + 3 + 9 + 4 + 638 + 5 + 6 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1386 + ... + 16758.

Almost surely, 2^139463856 is an apocalyptic number.

139463856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 139463856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (230671496).

139463856 is an abundant number, since it is smaller than the sum of its proper divisors (321879136).

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

139463856 is a wasteful number, since it uses less digits than its factorization.

139463856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15400 (or 15385 counting only the distinct ones).

The product of its digits is 466560, while the sum is 45.

The square root of 139463856 is about 11809.4816143639. The cubic root of 139463856 is about 518.5857230636.

The spelling of 139463856 in words is "one hundred thirty-nine million, four hundred sixty-three thousand, eight hundred fifty-six".