139985226 has 32 divisors (see below), whose sum is σ = 311505600. Its totient is φ = 46597680.

The previous prime is 139985221. The next prime is 139985249. The reversal of 139985226 is 622589931.

139985226 is a `hidden beast` number, since 1 + 39 + 98 + 522 + 6 = 666.

It is not an unprimeable number, because it can be changed into a prime (139985221) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53865 + ... + 56403.

It is an arithmetic number, because the mean of its divisors is an integer number (9734550).

Almost surely, 2^139985226 is an apocalyptic number.

139985226 is an abundant number, since it is smaller than the sum of its proper divisors (171520374).

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

139985226 is a wasteful number, since it uses less digits than its factorization.

139985226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3571 (or 3565 counting only the distinct ones).

The product of its digits is 233280, while the sum is 45.

The square root of 139985226 is about 11831.5352342796. The cubic root of 139985226 is about 519.2311443264.

The spelling of 139985226 in words is "one hundred thirty-nine million, nine hundred eighty-five thousand, two hundred twenty-six".