139934357 has 4 divisors (see below), whose sum is σ = 141851340. Its totient is φ = 138017376.

The previous prime is 139934351. The next prime is 139934381. The reversal of 139934357 is 753439931.

It is a happy number.

139934357 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 753439931 = 1583 ⋅475957.

It can be written as a sum of positive squares in 2 ways, for example, as 27447121 + 112487236 = 5239^2 + 10606^2 .

It is a cyclic number.

It is not a de Polignac number, because 139934357 - 2⁸ = 139934101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139934351) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 958382 + ... + 958527.

It is an arithmetic number, because the mean of its divisors is an integer number (35462835).

Almost surely, 2^139934357 is an apocalyptic number.

It is an amenable number.

139934357 is a deficient number, since it is larger than the sum of its proper divisors (1916983).

139934357 is an equidigital number, since it uses as much as digits as its factorization.

139934357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1916982.

The product of its digits is 306180, while the sum is 44.

The square root of 139934357 is about 11829.3853179276. The cubic root of 139934357 is about 519.1682425240.

The spelling of 139934357 in words is "one hundred thirty-nine million, nine hundred thirty-four thousand, three hundred fifty-seven".