139786038 has 48 divisors (see below), whose sum is σ = 349529856. Its totient is φ = 39547440.

The previous prime is 139786033. The next prime is 139786051. The reversal of 139786038 is 830687931.

It is a happy number.

139786038 is a `hidden beast` number, since 1 + 39 + 7 + 8 + 603 + 8 = 666.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 139785984 and 139786002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139786033) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7593 + ... + 18363.

It is an arithmetic number, because the mean of its divisors is an integer number (7281872).

Almost surely, 2^139786038 is an apocalyptic number.

139786038 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 139786038, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (174764928).

139786038 is an abundant number, since it is smaller than the sum of its proper divisors (209743818).

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

139786038 is a wasteful number, since it uses less digits than its factorization.

139786038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10889 (or 10886 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 139786038 is about 11823.1145642762. The cubic root of 139786038 is about 518.9847523559.

The spelling of 139786038 in words is "one hundred thirty-nine million, seven hundred eighty-six thousand, thirty-eight".