139816854 has 24 divisors (see below), whose sum is σ = 314157480. Its totient is φ = 46605456.

The previous prime is 139816841. The next prime is 139816861. The reversal of 139816854 is 458618931.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 143359 + ... + 144330.

It is an arithmetic number, because the mean of its divisors is an integer number (13089895).

Almost surely, 2^139816854 is an apocalyptic number.

139816854 is an abundant number, since it is smaller than the sum of its proper divisors (174340626).

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

139816854 is an equidigital number, since it uses as much as digits as its factorization.

139816854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 287706 (or 287694 counting only the distinct ones).

The product of its digits is 207360, while the sum is 45.

The square root of 139816854 is about 11824.4177023649. The cubic root of 139816854 is about 519.0228864912.

The spelling of 139816854 in words is "one hundred thirty-nine million, eight hundred sixteen thousand, eight hundred fifty-four".