138279896 has 8 divisors (see below), whose sum is σ = 259274820. Its totient is φ = 69139944.

The previous prime is 138279881. The next prime is 138279901. The reversal of 138279896 is 698972831.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8642486 + ... + 8642501.

Almost surely, 2^138279896 is an apocalyptic number.

It is an amenable number.

138279896 is a deficient number, since it is larger than the sum of its proper divisors (120994924).

138279896 is a wasteful number, since it uses less digits than its factorization.

138279896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17284993 (or 17284989 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 53.

The square root of 138279896 is about 11759.2472548204. The cubic root of 138279896 is about 517.1140623316.

The spelling of 138279896 in words is "one hundred thirty-eight million, two hundred seventy-nine thousand, eight hundred ninety-six".