139885734923 has 4 divisors (see below), whose sum is σ = 152602619928. Its totient is φ = 127168849920.

The previous prime is 139885734907. The next prime is 139885734941. The reversal of 139885734923 is 329437588931.

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 139885734923 - 2⁴ = 139885734907 is a prime.

It is a super-4 number, since 4×139885734923⁴ (a number of 46 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (139885734623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6358442486 + ... + 6358442507.

It is an arithmetic number, because the mean of its divisors is an integer number (38150654982).

Almost surely, 2^139885734923 is an apocalyptic number.

139885734923 is a deficient number, since it is larger than the sum of its proper divisors (12716885005).

139885734923 is a wasteful number, since it uses less digits than its factorization.

139885734923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12716885004.

The product of its digits is 39191040, while the sum is 62.

The spelling of 139885734923 in words is "one hundred thirty-nine billion, eight hundred eighty-five million, seven hundred thirty-four thousand, nine hundred twenty-three".