139952306 has 8 divisors (see below), whose sum is σ = 226076844. Its totient is φ = 64593360.

The previous prime is 139952303. The next prime is 139952317. The reversal of 139952306 is 603259931.

It can be written as a sum of positive squares in 2 ways, for example, as 135932281 + 4020025 = 11659^2 + 2005^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 139952306.

It is not an unprimeable number, because it can be changed into a prime (139952303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2691365 + ... + 2691416.

Almost surely, 2^139952306 is an apocalyptic number.

139952306 is a deficient number, since it is larger than the sum of its proper divisors (86124538).

139952306 is a wasteful number, since it uses less digits than its factorization.

139952306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5382796.

The product of its (nonzero) digits is 43740, while the sum is 38.

The square root of 139952306 is about 11830.1439551681. The cubic root of 139952306 is about 519.1904390086.

The spelling of 139952306 in words is "one hundred thirty-nine million, nine hundred fifty-two thousand, three hundred six".