139683888 has 30 divisors (see below), whose sum is σ = 390921284. Its totient is φ = 46561248.

The previous prime is 139683829. The next prime is 139683889. The reversal of 139683888 is 888386931.

It is a happy number.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (139683889) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 484870 + ... + 485157.

Almost surely, 2^139683888 is an apocalyptic number.

139683888 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

139683888 is an abundant number, since it is smaller than the sum of its proper divisors (251237396).

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

139683888 is a wasteful number, since it uses less digits than its factorization.

139683888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 970041 (or 970032 counting only the distinct ones).

The product of its digits is 1990656, while the sum is 54.

The square root of 139683888 is about 11818.7938470895. The cubic root of 139683888 is about 518.8583038397.

The spelling of 139683888 in words is "one hundred thirty-nine million, six hundred eighty-three thousand, eight hundred eighty-eight".