8991451 has 6 divisors (see below), whose sum is σ = 10459500. Its totient is φ = 7706916.

The previous prime is 8991449. The next prime is 8991517. The reversal of 8991451 is 1541998.

8991451 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 8991451 - 2¹ = 8991449 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 8991451.

It is not an unprimeable number, because it can be changed into a prime (8991401) 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, 91701 + ... + 91798.

It is an arithmetic number, because the mean of its divisors is an integer number (1743250).

Almost surely, 2^8991451 is an apocalyptic number.

8991451 is a deficient number, since it is larger than the sum of its proper divisors (1468049).

8991451 is a wasteful number, since it uses less digits than its factorization.

8991451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183513 (or 183506 counting only the distinct ones).

The product of its digits is 12960, while the sum is 37.

The square root of 8991451 is about 2998.5748281475. The cubic root of 8991451 is about 207.9424998234.

The spelling of 8991451 in words is "eight million, nine hundred ninety-one thousand, four hundred fifty-one".