8215150889 has 6 divisors (see below), whose sum is σ = 9029876730. Its totient is φ = 7468318880.

The previous prime is 8215150861. The next prime is 8215150961. The reversal of 8215150889 is 9880515128.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 7695675625 + 519475264 = 87725^2 + 22792^2 .

It is not a de Polignac number, because 8215150889 - 2¹⁶ = 8215085353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8215150819) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 33946784 + ... + 33947025.

It is an arithmetic number, because the mean of its divisors is an integer number (1504979455).

Almost surely, 2^8215150889 is an apocalyptic number.

It is an amenable number.

8215150889 is a deficient number, since it is larger than the sum of its proper divisors (814725841).

8215150889 is a wasteful number, since it uses less digits than its factorization.

8215150889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67893831 (or 67893820 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 47.

The square root of 8215150889 is about 90637.4695641929. The cubic root of 8215150889 is about 2017.7708711436.

The spelling of 8215150889 in words is "eight billion, two hundred fifteen million, one hundred fifty thousand, eight hundred eighty-nine".