884138436 has 48 divisors (see below), whose sum is σ = 2301868800. Its totient is φ = 293471136.

The previous prime is 884138429. The next prime is 884138443. The reversal of 884138436 is 634831488.

884138436 is a `hidden beast` number, since 8 + 84 + 138 + 436 = 666.

It is an interprime number because it is at equal distance from previous prime (884138429) and next prime (884138443).

It is a junction number, because it is equal to n+sod(n) for n = 884138391 and 884138400.

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, 8686 + ... + 42938.

It is an arithmetic number, because the mean of its divisors is an integer number (47955600).

Almost surely, 2^884138436 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 884138436, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1150934400).

884138436 is an abundant number, since it is smaller than the sum of its proper divisors (1417730364).

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

884138436 is a wasteful number, since it uses less digits than its factorization.

884138436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34505 (or 34497 counting only the distinct ones).

The product of its digits is 442368, while the sum is 45.

The square root of 884138436 is about 29734.4654567725. The cubic root of 884138436 is about 959.7838185094.

The spelling of 884138436 in words is "eight hundred eighty-four million, one hundred thirty-eight thousand, four hundred thirty-six".