139692168 has 256 divisors, whose sum is σ = 499046400. Its totient is φ = 35147520.

The previous prime is 139692167. The next prime is 139692209. The reversal of 139692168 is 861296931.

It is a happy number.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (139692167) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 615271 + ... + 615497.

It is an arithmetic number, because the mean of its divisors is an integer number (1949400).

Almost surely, 2^139692168 is an apocalyptic number.

139692168 is a gapful number since it is divisible by the number (18) 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 139692168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (249523200).

139692168 is an abundant number, since it is smaller than the sum of its proper divisors (359354232).

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

139692168 is a wasteful number, since it uses less digits than its factorization.

139692168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297 (or 287 counting only the distinct ones).

The product of its digits is 139968, while the sum is 45.

The square root of 139692168 is about 11819.1441314505. The cubic root of 139692168 is about 518.8685557066.

The spelling of 139692168 in words is "one hundred thirty-nine million, six hundred ninety-two thousand, one hundred sixty-eight".