138983867 has 12 divisors (see below), whose sum is σ = 153088320. Its totient is φ = 126083760.

The previous prime is 138983837. The next prime is 138983893. The reversal of 138983867 is 768389831.

138983867 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 138983867 - 2¹⁰ = 138982843 is a prime.

It is not an unprimeable number, because it can be changed into a prime (138983827) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 78134 + ... + 79892.

It is an arithmetic number, because the mean of its divisors is an integer number (12757360).

Almost surely, 2^138983867 is an apocalyptic number.

138983867 is a deficient number, since it is larger than the sum of its proper divisors (14104453).

138983867 is a wasteful number, since it uses less digits than its factorization.

138983867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2434 (or 2423 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 53.

The square root of 138983867 is about 11789.1419110977. The cubic root of 138983867 is about 517.9901050569.

The spelling of 138983867 in words is "one hundred thirty-eight million, nine hundred eighty-three thousand, eight hundred sixty-seven".