139229623 has 8 divisors (see below), whose sum is σ = 150948000. Its totient is φ = 127655328.

The previous prime is 139229617. The next prime is 139229639. The reversal of 139229623 is 326922931.

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 139229623 - 2⁵ = 139229591 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 (139229653) 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, 34003 + ... + 37876.

It is an arithmetic number, because the mean of its divisors is an integer number (18868500).

Almost surely, 2^139229623 is an apocalyptic number.

139229623 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

139229623 is a deficient number, since it is larger than the sum of its proper divisors (11718377).

139229623 is a wasteful number, since it uses less digits than its factorization.

139229623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72041.

The product of its digits is 34992, while the sum is 37.

The square root of 139229623 is about 11799.5602884175. The cubic root of 139229623 is about 518.2952345203.

The spelling of 139229623 in words is "one hundred thirty-nine million, two hundred twenty-nine thousand, six hundred twenty-three".