139865416 has 8 divisors (see below), whose sum is σ = 262247670. Its totient is φ = 69932704.

The previous prime is 139865413. The next prime is 139865431. The reversal of 139865416 is 614568931.

139865416 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 129276900 + 10588516 = 11370^2 + 3254^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (139865413) 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 as a sum of consecutive naturals, namely, 8741581 + ... + 8741596.

Almost surely, 2^139865416 is an apocalyptic number.

It is an amenable number.

139865416 is a deficient number, since it is larger than the sum of its proper divisors (122382254).

139865416 is a wasteful number, since it uses less digits than its factorization.

139865416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17483183 (or 17483179 counting only the distinct ones).

The product of its digits is 155520, while the sum is 43.

The square root of 139865416 is about 11826.4709867314. The cubic root of 139865416 is about 519.0829695478.

The spelling of 139865416 in words is "one hundred thirty-nine million, eight hundred sixty-five thousand, four hundred sixteen".