930799821 has 32 divisors (see below), whose sum is σ = 1434792960. Its totient is φ = 525763584.

The previous prime is 930799819. The next prime is 930799829. The reversal of 930799821 is 128997039.

It is not a de Polignac number, because 930799821 - 2¹ = 930799819 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (930799829) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 724846 + ... + 726128.

It is an arithmetic number, because the mean of its divisors is an integer number (44837280).

Almost surely, 2^930799821 is an apocalyptic number.

It is an amenable number.

930799821 is a deficient number, since it is larger than the sum of its proper divisors (503993139).

930799821 is a wasteful number, since it uses less digits than its factorization.

930799821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1665.

The product of its (nonzero) digits is 244944, while the sum is 48.

The square root of 930799821 is about 30509.0121275665. The cubic root of 930799821 is about 976.3797501714.

The spelling of 930799821 in words is "nine hundred thirty million, seven hundred ninety-nine thousand, eight hundred twenty-one".