138479283 has 12 divisors (see below), whose sum is σ = 202274280. Its totient is φ = 91281696.

The previous prime is 138479273. The next prime is 138479291. The reversal of 138479283 is 382974831.

It is not a de Polignac number, because 138479283 - 2⁸ = 138479027 is a prime.

It is not an unprimeable number, because it can be changed into a prime (138479273) 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, 85641 + ... + 87242.

It is an arithmetic number, because the mean of its divisors is an integer number (16856190).

Almost surely, 2^138479283 is an apocalyptic number.

138479283 is a deficient number, since it is larger than the sum of its proper divisors (63794997).

138479283 is a wasteful number, since it uses less digits than its factorization.

138479283 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172978 (or 172975 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 138479283 is about 11767.7220820344. The cubic root of 138479283 is about 517.3624867418.

The spelling of 138479283 in words is "one hundred thirty-eight million, four hundred seventy-nine thousand, two hundred eighty-three".