139678396 has 48 divisors (see below), whose sum is σ = 289846368. Its totient is φ = 58060800.

The previous prime is 139678391. The next prime is 139678417. The reversal of 139678396 is 693876931.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139678391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63556 + ... + 65716.

It is an arithmetic number, because the mean of its divisors is an integer number (6038466).

Almost surely, 2^139678396 is an apocalyptic number.

It is an amenable number.

139678396 is an abundant number, since it is smaller than the sum of its proper divisors (150167972).

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

139678396 is a wasteful number, since it uses less digits than its factorization.

139678396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2302 (or 2300 counting only the distinct ones).

The product of its digits is 1469664, while the sum is 52.

The square root of 139678396 is about 11818.5615029918. The cubic root of 139678396 is about 518.8515037065.

The spelling of 139678396 in words is "one hundred thirty-nine million, six hundred seventy-eight thousand, three hundred ninety-six".