139189648 has 20 divisors (see below), whose sum is σ = 290424988. Its totient is φ = 64241280.

The previous prime is 139189643. The next prime is 139189679. The reversal of 139189648 is 846981931.

It can be written as a sum of positive squares in 2 ways, for example, as 17572864 + 121616784 = 4192^2 + 11028^2 .

It is a super-2 number, since 2×139189648² = 38747516220727808, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (139189643) 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 3 ways as a sum of consecutive naturals, for example, 334383 + ... + 334798.

Almost surely, 2^139189648 is an apocalyptic number.

It is an amenable number.

139189648 is an abundant number, since it is smaller than the sum of its proper divisors (151235340).

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

139189648 is a wasteful number, since it uses less digits than its factorization.

139189648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 669202 (or 669196 counting only the distinct ones).

The product of its digits is 373248, while the sum is 49.

The square root of 139189648 is about 11797.8662477585. The cubic root of 139189648 is about 518.2456262191.

The spelling of 139189648 in words is "one hundred thirty-nine million, one hundred eighty-nine thousand, six hundred forty-eight".