840004088 has 64 divisors (see below), whose sum is σ = 1967569920. Its totient is φ = 326620800.

The previous prime is 840004043. The next prime is 840004093. The reversal of 840004088 is 880400048.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 406145 + ... + 408207.

It is an arithmetic number, because the mean of its divisors is an integer number (30743280).

Almost surely, 2^840004088 is an apocalyptic number.

840004088 is a gapful number since it is divisible by the number (88) 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 840004088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (983784960).

840004088 is an abundant number, since it is smaller than the sum of its proper divisors (1127565832).

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

840004088 is a wasteful number, since it uses less digits than its factorization.

840004088 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2748 (or 2744 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 32.

The square root of 840004088 is about 28982.8240169932. The cubic root of 840004088 is about 943.5403266904.

It can be divided in two parts, 84000 and 4088, that added together give a palindrome (88088).

The spelling of 840004088 in words is "eight hundred forty million, four thousand, eighty-eight".