138659480 has 32 divisors (see below), whose sum is σ = 330337440. Its totient is φ = 52200960.

The previous prime is 138659471. The next prime is 138659509. The reversal of 138659480 is 84956831.

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 in 7 ways as a sum of consecutive naturals, for example, 101276 + ... + 102635.

It is an arithmetic number, because the mean of its divisors is an integer number (10323045).

Almost surely, 2^138659480 is an apocalyptic number.

138659480 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

138659480 is an abundant number, since it is smaller than the sum of its proper divisors (191677960).

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

138659480 is a wasteful number, since it uses less digits than its factorization.

138659480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203939 (or 203935 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 44.

The square root of 138659480 is about 11775.3760024893. The cubic root of 138659480 is about 517.5867964911.

The spelling of 138659480 in words is "one hundred thirty-eight million, six hundred fifty-nine thousand, four hundred eighty".