861000924 has 48 divisors (see below), whose sum is σ = 2334931200. Its totient is φ = 241829376.

The previous prime is 861000893. The next prime is 861000947. The reversal of 861000924 is 429000168.

It is a super-2 number, since 2×861000924² = 1482645182257707552, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 861000891 and 861000900.

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, 81909 + ... + 91820.

It is an arithmetic number, because the mean of its divisors is an integer number (48644400).

Almost surely, 2^861000924 is an apocalyptic number.

861000924 is a gapful number since it is divisible by the number (84) formed by its first and last digit.

It is an amenable number.

861000924 is an abundant number, since it is smaller than the sum of its proper divisors (1473930276).

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

861000924 is a wasteful number, since it uses less digits than its factorization.

861000924 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173802 (or 173800 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 861000924 is about 29342.8172471561. The cubic root of 861000924 is about 951.3373313062.

The spelling of 861000924 in words is "eight hundred sixty-one million, nine hundred twenty-four", and thus it is an aban number.