139460357 has 4 divisors (see below), whose sum is σ = 139648800. Its totient is φ = 139271916.

The previous prime is 139460353. The next prime is 139460381. The reversal of 139460357 is 753064931.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 753064931 = 809 ⋅930859.

It is a cyclic number.

It is not a de Polignac number, because 139460357 - 2² = 139460353 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 139460357.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139460353) 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, 93107 + ... + 94592.

It is an arithmetic number, because the mean of its divisors is an integer number (34912200).

Almost surely, 2^139460357 is an apocalyptic number.

It is an amenable number.

139460357 is a deficient number, since it is larger than the sum of its proper divisors (188443).

139460357 is an equidigital number, since it uses as much as digits as its factorization.

139460357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188442.

The product of its (nonzero) digits is 68040, while the sum is 38.

The square root of 139460357 is about 11809.3334697603. Note that the first 3 decimals coincide. The cubic root of 139460357 is about 518.5813861057.

The spelling of 139460357 in words is "one hundred thirty-nine million, four hundred sixty thousand, three hundred fifty-seven".