139811722 has 8 divisors (see below), whose sum is σ = 214832772. Its totient is φ = 68200800.

The previous prime is 139811701. The next prime is 139811729. The reversal of 139811722 is 227118931.

139811722 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 110229001 + 29582721 = 10499^2 + 5439^2 .

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

It is not an unprimeable number, because it can be changed into a prime (139811729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 852429 + ... + 852592.

Almost surely, 2^139811722 is an apocalyptic number.

139811722 is a deficient number, since it is larger than the sum of its proper divisors (75021050).

139811722 is a wasteful number, since it uses less digits than its factorization.

139811722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1705064.

The product of its digits is 6048, while the sum is 34.

The square root of 139811722 is about 11824.2006918015. The cubic root of 139811722 is about 519.0165361408.

The spelling of 139811722 in words is "one hundred thirty-nine million, eight hundred eleven thousand, seven hundred twenty-two".