139996224 has 189 divisors, whose sum is σ = 441472447. Its totient is φ = 42405888.

The previous prime is 139996211. The next prime is 139996229. The reversal of 139996224 is 422699931.

It is a happy number.

The square root of 139996224 is 11832.

It is a perfect power (a square), and thus also a powerful number.

139996224 is a `hidden beast` number, since 13 + 9 + 9 + 9 + 622 + 4 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 13838400 + 126157824 = 3720^2 + 11232^2 .

It is a super-3 number, since 3×139996224³ (a number of 25 digits) contains 333 as substring.

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

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 139996224.

It is not an unprimeable number, because it can be changed into a prime (139996229) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 4827442 + ... + 4827470.

Almost surely, 2^139996224 is an apocalyptic number.

139996224 is the 11832-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 139996224

139996224 is an abundant number, since it is smaller than the sum of its proper divisors (301476223).

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

139996224 is a wasteful number, since it uses less digits than its factorization.

139996224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110 (or 51 counting only the distinct ones).

The product of its digits is 209952, while the sum is 45.

The cubic root of 139996224 is about 519.2447418437.

The spelling of 139996224 in words is "one hundred thirty-nine million, nine hundred ninety-six thousand, two hundred twenty-four".