8219956 has 6 divisors (see below), whose sum is σ = 14384930. Its totient is φ = 4109976.

The previous prime is 8219941. The next prime is 8219969. The reversal of 8219956 is 6599128.

It can be written as a sum of positive squares in only one way, i.e., 5363856 + 2856100 = 2316^2 + 1690^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1027491 + ... + 1027498.

Almost surely, 2^8219956 is an apocalyptic number.

It is an amenable number.

8219956 is a deficient number, since it is larger than the sum of its proper divisors (6164974).

8219956 is a wasteful number, since it uses less digits than its factorization.

8219956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2054993 (or 2054991 counting only the distinct ones).

The product of its digits is 38880, while the sum is 40.

The square root of 8219956 is about 2867.0465639749. The cubic root of 8219956 is about 201.8164198197.

The spelling of 8219956 in words is "eight million, two hundred nineteen thousand, nine hundred fifty-six".