138769208 has 32 divisors (see below), whose sum is σ = 264092400. Its totient is φ = 68352768.

The previous prime is 138769199. The next prime is 138769231. The reversal of 138769208 is 802967831.

It is a congruent number.

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, 202835 + ... + 203517.

Almost surely, 2^138769208 is an apocalyptic number.

It is an amenable number.

138769208 is a deficient number, since it is larger than the sum of its proper divisors (125323192).

138769208 is a wasteful number, since it uses less digits than its factorization.

138769208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1031 (or 1027 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 44.

The square root of 138769208 is about 11780.0342953660. The cubic root of 138769208 is about 517.7232910396.

The spelling of 138769208 in words is "one hundred thirty-eight million, seven hundred sixty-nine thousand, two hundred eight".