8450821911 has 8 divisors (see below), whose sum is σ = 12877442944. Its totient is φ = 4829041080.

The previous prime is 8450821909. The next prime is 8450821913. The reversal of 8450821911 is 1191280548.

It is an interprime number because it is at equal distance from previous prime (8450821909) and next prime (8450821913).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 8450821911 - 2¹ = 8450821909 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8450821911.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8450821913) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 201210025 + ... + 201210066.

It is an arithmetic number, because the mean of its divisors is an integer number (1609680368).

Almost surely, 2^8450821911 is an apocalyptic number.

8450821911 is a deficient number, since it is larger than the sum of its proper divisors (4426621033).

8450821911 is a wasteful number, since it uses less digits than its factorization.

8450821911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402420101.

The product of its (nonzero) digits is 23040, while the sum is 39.

The square root of 8450821911 is about 91928.3520520193. The cubic root of 8450821911 is about 2036.8840928909.

The spelling of 8450821911 in words is "eight billion, four hundred fifty million, eight hundred twenty-one thousand, nine hundred eleven".