138829488 has 40 divisors (see below), whose sum is σ = 409878528. Its totient is φ = 39665472.

The previous prime is 138829469. The next prime is 138829511. The reversal of 138829488 is 884928831.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 138829488.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 206256 + ... + 206927.

Almost surely, 2^138829488 is an apocalyptic number.

It is an amenable number.

138829488 is an abundant number, since it is smaller than the sum of its proper divisors (271049040).

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

138829488 is a wasteful number, since it uses less digits than its factorization.

138829488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 413201 (or 413195 counting only the distinct ones).

The product of its digits is 884736, while the sum is 51.

The square root of 138829488 is about 11782.5925839774. The cubic root of 138829488 is about 517.7982448488.

It can be divided in two parts, 1388 and 29488, that added together give a triangular number (30876 = T₂₄₈).

The spelling of 138829488 in words is "one hundred thirty-eight million, eight hundred twenty-nine thousand, four hundred eighty-eight".