8991495 has 12 divisors (see below), whose sum is σ = 15585336. Its totient is φ = 4795440.

The previous prime is 8991449. The next prime is 8991517. The reversal of 8991495 is 5941998.

It is not a de Polignac number, because 8991495 - 2⁶ = 8991431 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 199811 = 8991495 / (8 + 9 + 9 + 1 + 4 + 9 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 8991495.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 99861 + ... + 99950.

It is an arithmetic number, because the mean of its divisors is an integer number (1298778).

Almost surely, 2^8991495 is an apocalyptic number.

8991495 is a deficient number, since it is larger than the sum of its proper divisors (6593841).

8991495 is a wasteful number, since it uses less digits than its factorization.

8991495 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199822 (or 199819 counting only the distinct ones).

The product of its digits is 116640, while the sum is 45.

The square root of 8991495 is about 2998.5821649573. The cubic root of 8991495 is about 207.9428390143.

It can be divided in two parts, 89914 and 95, that added together give a palindrome (90009).

The spelling of 8991495 in words is "eight million, nine hundred ninety-one thousand, four hundred ninety-five".