139387073 has 8 divisors (see below), whose sum is σ = 159371520. Its totient is φ = 119420640.

The previous prime is 139387057. The next prime is 139387091. The reversal of 139387073 is 370783931.

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

It is a cyclic number.

It is not a de Polignac number, because 139387073 - 2⁴ = 139387057 is a prime.

It is a super-2 number, since 2×139387073² = 38857512239014658, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 139387073.

It is not an unprimeable number, because it can be changed into a prime (139387673) 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 7 ways as a sum of consecutive naturals, for example, 24893 + ... + 29973.

It is an arithmetic number, because the mean of its divisors is an integer number (19921440).

Almost surely, 2^139387073 is an apocalyptic number.

It is an amenable number.

139387073 is a deficient number, since it is larger than the sum of its proper divisors (19984447).

139387073 is an equidigital number, since it uses as much as digits as its factorization.

139387073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9007.

The product of its (nonzero) digits is 95256, while the sum is 41.

The square root of 139387073 is about 11806.2302620269. The cubic root of 139387073 is about 518.4905350141.

The spelling of 139387073 in words is "one hundred thirty-nine million, three hundred eighty-seven thousand, seventy-three".