139440084 has 36 divisors (see below), whose sum is σ = 378481824. Its totient is φ = 39839856.

The previous prime is 139440073. The next prime is 139440097. The reversal of 139440084 is 480044931.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 117984 + ... + 119159.

It is an arithmetic number, because the mean of its divisors is an integer number (10513384).

Almost surely, 2^139440084 is an apocalyptic number.

139440084 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

139440084 is an abundant number, since it is smaller than the sum of its proper divisors (239041740).

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

139440084 is a wasteful number, since it uses less digits than its factorization.

139440084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237164 (or 237155 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 139440084 is about 11808.4750920684. The cubic root of 139440084 is about 518.5562565990.

The spelling of 139440084 in words is "one hundred thirty-nine million, four hundred forty thousand, eighty-four".