872784444 has 24 divisors (see below), whose sum is σ = 2327425408. Its totient is φ = 249366960.

The previous prime is 872784439. The next prime is 872784449. The reversal of 872784444 is 444487278.

It is an interprime number because it is at equal distance from previous prime (872784439) and next prime (872784449).

It is a junction number, because it is equal to n+sod(n) for n = 872784393 and 872784402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (872784449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5195062 + ... + 5195229.

Almost surely, 2^872784444 is an apocalyptic number.

872784444 is a gapful number since it is divisible by the number (84) formed by its first and last digit.

It is an amenable number.

872784444 is an abundant number, since it is smaller than the sum of its proper divisors (1454640964).

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

872784444 is a wasteful number, since it uses less digits than its factorization.

872784444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10390305 (or 10390303 counting only the distinct ones).

The product of its digits is 1605632, while the sum is 48.

The square root of 872784444 is about 29542.9254475585. The cubic root of 872784444 is about 955.6576317031.

The spelling of 872784444 in words is "eight hundred seventy-two million, seven hundred eighty-four thousand, four hundred forty-four".