139224357 has 6 divisors (see below), whose sum is σ = 201101862. Its totient is φ = 92816232.

The previous prime is 139224347. The next prime is 139224361. The reversal of 139224357 is 753422931.

It can be written as a sum of positive squares in only one way, i.e., 135280161 + 3944196 = 11631^2 + 1986^2 .

It is not a de Polignac number, because 139224357 - 2¹⁰ = 139223333 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139224347) 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 5 ways as a sum of consecutive naturals, for example, 7734678 + ... + 7734695.

It is an arithmetic number, because the mean of its divisors is an integer number (33516977).

Almost surely, 2^139224357 is an apocalyptic number.

It is an amenable number.

139224357 is a deficient number, since it is larger than the sum of its proper divisors (61877505).

139224357 is a wasteful number, since it uses less digits than its factorization.

139224357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15469379 (or 15469376 counting only the distinct ones).

The product of its digits is 45360, while the sum is 36.

The square root of 139224357 is about 11799.3371423991. The cubic root of 139224357 is about 518.2887000462.

The spelling of 139224357 in words is "one hundred thirty-nine million, two hundred twenty-four thousand, three hundred fifty-seven".