912283821 has 12 divisors (see below), whose sum is σ = 1318696860. Its totient is φ = 607749120.

The previous prime is 912283817. The next prime is 912283837. The reversal of 912283821 is 128382219.

It can be written as a sum of positive squares in 2 ways, for example, as 63202500 + 849081321 = 7950^2 + 29139^2 .

It is not a de Polignac number, because 912283821 - 2² = 912283817 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (912283811) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23290 + ... + 48651.

It is an arithmetic number, because the mean of its divisors is an integer number (109891405).

Almost surely, 2^912283821 is an apocalyptic number.

It is an amenable number.

912283821 is a deficient number, since it is larger than the sum of its proper divisors (406413039).

912283821 is a wasteful number, since it uses less digits than its factorization.

912283821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73356 (or 73353 counting only the distinct ones).

The product of its digits is 13824, while the sum is 36.

The square root of 912283821 is about 30204.0365017658. The cubic root of 912283821 is about 969.8621056681.

The spelling of 912283821 in words is "nine hundred twelve million, two hundred eighty-three thousand, eight hundred twenty-one".