139815984 has 240 divisors, whose sum is σ = 480247040. Its totient is φ = 34214400.

The previous prime is 139815979. The next prime is 139815997. The reversal of 139815984 is 489518931.

It is a Harshad number since it is a multiple of its sum of digits (48).

Its product of digits (311040) is a multiple of the sum of its prime factors (240).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 772374 + ... + 772554.

Almost surely, 2^139815984 is an apocalyptic number.

139815984 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 139815984, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (240123520).

139815984 is an abundant number, since it is smaller than the sum of its proper divisors (340431056).

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

139815984 is a wasteful number, since it uses less digits than its factorization.

139815984 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 240 (or 223 counting only the distinct ones).

The product of its digits is 311040, while the sum is 48.

The square root of 139815984 is about 11824.3809140267. The cubic root of 139815984 is about 519.0218099618.

The spelling of 139815984 in words is "one hundred thirty-nine million, eight hundred fifteen thousand, nine hundred eighty-four".