139489357 has 8 divisors (see below), whose sum is σ = 160173632. Its totient is φ = 118994400.

The previous prime is 139489331. The next prime is 139489379. The reversal of 139489357 is 753984931.

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

It is a de Polignac number, because none of the positive numbers 2^k-139489357 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 139489357.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139489327) 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, 45744 + ... + 48697.

It is an arithmetic number, because the mean of its divisors is an integer number (20021704).

Almost surely, 2^139489357 is an apocalyptic number.

It is an amenable number.

139489357 is a deficient number, since it is larger than the sum of its proper divisors (20684275).

139489357 is an equidigital number, since it uses as much as digits as its factorization.

139489357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94659.

The product of its digits is 816480, while the sum is 49.

The square root of 139489357 is about 11810.5612483065. The cubic root of 139489357 is about 518.6173289791.

The spelling of 139489357 in words is "one hundred thirty-nine million, four hundred eighty-nine thousand, three hundred fifty-seven".