139433616 has 160 divisors (see below), whose sum is σ = 467232000. Its totient is φ = 39795840.

The previous prime is 139433611. The next prime is 139433641. The reversal of 139433616 is 616334931.

139433616 is a `hidden beast` number, since 1 + 3 + 9 + 4 + 33 + 616 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

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 (139433611) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 147706 + ... + 148646.

It is an arithmetic number, because the mean of its divisors is an integer number (2920200).

Almost surely, 2^139433616 is an apocalyptic number.

139433616 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 139433616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (233616000).

139433616 is an abundant number, since it is smaller than the sum of its proper divisors (327798384).

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

139433616 is an equidigital number, since it uses as much as digits as its factorization.

139433616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 979 (or 953 counting only the distinct ones).

The product of its digits is 34992, while the sum is 36.

The square root of 139433616 is about 11808.2012177977. The cubic root of 139433616 is about 518.5482386422.

The spelling of 139433616 in words is "one hundred thirty-nine million, four hundred thirty-three thousand, six hundred sixteen".