138883772 has 12 divisors (see below), whose sum is σ = 243319776. Its totient is φ = 69363840.

The previous prime is 138883757. The next prime is 138883777. The reversal of 138883772 is 277388831.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138883777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15413 + ... + 22700.

It is an arithmetic number, because the mean of its divisors is an integer number (20276648).

Almost surely, 2^138883772 is an apocalyptic number.

It is an amenable number.

138883772 is a deficient number, since it is larger than the sum of its proper divisors (104436004).

138883772 is a wasteful number, since it uses less digits than its factorization.

138883772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39028 (or 39026 counting only the distinct ones).

The product of its digits is 451584, while the sum is 47.

The square root of 138883772 is about 11784.8959265663. The cubic root of 138883772 is about 517.8657245021.

The spelling of 138883772 in words is "one hundred thirty-eight million, eight hundred eighty-three thousand, seven hundred seventy-two".