139739046 has 16 divisors (see below), whose sum is σ = 279986544. Its totient is φ = 46494944.

The previous prime is 139739011. The next prime is 139739051. The reversal of 139739046 is 640937931.

139739046 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 139738989 and 139739007.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17565 + ... + 24248.

It is an arithmetic number, because the mean of its divisors is an integer number (17499159).

Almost surely, 2^139739046 is an apocalyptic number.

139739046 is an abundant number, since it is smaller than the sum of its proper divisors (140247498).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

139739046 is a wasteful number, since it uses less digits than its factorization.

139739046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42375.

The product of its (nonzero) digits is 122472, while the sum is 42.

The square root of 139739046 is about 11821.1271036226. The cubic root of 139739046 is about 518.9265899786.

The spelling of 139739046 in words is "one hundred thirty-nine million, seven hundred thirty-nine thousand, forty-six".