139725193 has 8 divisors (see below), whose sum is σ = 148159368. Its totient is φ = 131314944.

The previous prime is 139725149. The next prime is 139725211. The reversal of 139725193 is 391527931.

It can be written as a sum of positive squares in 4 ways, for example, as 40284409 + 99440784 = 6347^2 + 9972^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-139725193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (139725143) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6855 + ... + 18067.

It is an arithmetic number, because the mean of its divisors is an integer number (18519921).

Almost surely, 2^139725193 is an apocalyptic number.

It is an amenable number.

139725193 is a deficient number, since it is larger than the sum of its proper divisors (8434175).

139725193 is a wasteful number, since it uses less digits than its factorization.

139725193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11963.

The product of its digits is 51030, while the sum is 40.

The square root of 139725193 is about 11820.5411466650. The cubic root of 139725193 is about 518.9094415203.

The spelling of 139725193 in words is "one hundred thirty-nine million, seven hundred twenty-five thousand, one hundred ninety-three".