139012583 has 4 divisors (see below), whose sum is σ = 139044480. Its totient is φ = 138980688.

The previous prime is 139012579. The next prime is 139012597. The reversal of 139012583 is 385210931.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 139012583 - 2² = 139012579 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 (139012183) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8135 + ... + 18552.

It is an arithmetic number, because the mean of its divisors is an integer number (34761120).

Almost surely, 2^139012583 is an apocalyptic number.

139012583 is a deficient number, since it is larger than the sum of its proper divisors (31897).

139012583 is an equidigital number, since it uses as much as digits as its factorization.

139012583 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31896.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 139012583 is about 11790.3597485403. The cubic root of 139012583 is about 518.0257772536.

The spelling of 139012583 in words is "one hundred thirty-nine million, twelve thousand, five hundred eighty-three".