139648650 has 24 divisors (see below), whose sum is σ = 346329024. Its totient is φ = 37239600.

The previous prime is 139648637. The next prime is 139648657. The reversal of 139648650 is 56846931.

It is not an unprimeable number, because it can be changed into a prime (139648657) 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 11 ways as a sum of consecutive naturals, for example, 465346 + ... + 465645.

It is an arithmetic number, because the mean of its divisors is an integer number (14430376).

Almost surely, 2^139648650 is an apocalyptic number.

139648650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

139648650 is an abundant number, since it is smaller than the sum of its proper divisors (206680374).

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

139648650 is a wasteful number, since it uses less digits than its factorization.

139648650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 931006 (or 931001 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 42.

The square root of 139648650 is about 11817.3029917998. The cubic root of 139648650 is about 518.8146694429.

The spelling of 139648650 in words is "one hundred thirty-nine million, six hundred forty-eight thousand, six hundred fifty".