139499068 has 6 divisors (see below), whose sum is σ = 244123376. Its totient is φ = 69749532.

The previous prime is 139499057. The next prime is 139499089. The reversal of 139499068 is 860994931.

It is a congruent number.

It is an unprimeable number.

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, 17437380 + ... + 17437387.

Almost surely, 2^139499068 is an apocalyptic number.

It is an amenable number.

139499068 is a deficient number, since it is larger than the sum of its proper divisors (104624308).

139499068 is a wasteful number, since it uses less digits than its factorization.

139499068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34874771 (or 34874769 counting only the distinct ones).

The product of its (nonzero) digits is 419904, while the sum is 49.

The square root of 139499068 is about 11810.9723562457. The cubic root of 139499068 is about 518.6293637707.

The spelling of 139499068 in words is "one hundred thirty-nine million, four hundred ninety-nine thousand, sixty-eight".