139468946 has 16 divisors (see below), whose sum is σ = 217223640. Its totient is φ = 67079040.

The previous prime is 139468937. The next prime is 139468957. The reversal of 139468946 is 649864931.

139468946 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 4 ways, for example, as 120012025 + 19456921 = 10955^2 + 4411^2 .

It is a junction number, because it is equal to n+sod(n) for n = 139468894 and 139468903.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11726 + ... + 20406.

Almost surely, 2^139468946 is an apocalyptic number.

139468946 is a deficient number, since it is larger than the sum of its proper divisors (77754694).

139468946 is a wasteful number, since it uses less digits than its factorization.

139468946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8989.

The product of its digits is 1119744, while the sum is 50.

The square root of 139468946 is about 11809.6971171999. The cubic root of 139468946 is about 518.5920319126.

The spelling of 139468946 in words is "one hundred thirty-nine million, four hundred sixty-eight thousand, nine hundred forty-six".