139012623 has 12 divisors (see below), whose sum is σ = 200899608. Its totient is φ = 92627280.

The previous prime is 139012619. The next prime is 139012669. The reversal of 139012623 is 326210931.

139012623 is a `hidden beast` number, since 1 + 39 + 0 + 1 + 2 + 623 = 666.

It is not a de Polignac number, because 139012623 - 2² = 139012619 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139012603) 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 11 ways as a sum of consecutive naturals, for example, 27661 + ... + 32297.

It is an arithmetic number, because the mean of its divisors is an integer number (16741634).

Almost surely, 2^139012623 is an apocalyptic number.

139012623 is a deficient number, since it is larger than the sum of its proper divisors (61886985).

139012623 is a wasteful number, since it uses less digits than its factorization.

139012623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7974 (or 7971 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 139012623 is about 11790.3614448413. The cubic root of 139012623 is about 518.0258269398.

The spelling of 139012623 in words is "one hundred thirty-nine million, twelve thousand, six hundred twenty-three".