138883884 has 24 divisors (see below), whose sum is σ = 324822960. Its totient is φ = 46185984.

The previous prime is 138883879. The next prime is 138883889. The reversal of 138883884 is 488388831.

It is an interprime number because it is at equal distance from previous prime (138883879) and next prime (138883889).

It is not an unprimeable number, because it can be changed into a prime (138883889) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8169 + ... + 18560.

It is an arithmetic number, because the mean of its divisors is an integer number (13534290).

Almost surely, 2^138883884 is an apocalyptic number.

It is an amenable number.

138883884 is an abundant number, since it is smaller than the sum of its proper divisors (185939076).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

138883884 is a wasteful number, since it uses less digits than its factorization.

138883884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27169 (or 27167 counting only the distinct ones).

The product of its digits is 1179648, while the sum is 51.

The square root of 138883884 is about 11784.9006784105. The cubic root of 138883884 is about 517.8658637095.

The spelling of 138883884 in words is "one hundred thirty-eight million, eight hundred eighty-three thousand, eight hundred eighty-four".