8991960 has 32 divisors (see below), whose sum is σ = 26976240. Its totient is φ = 2397824.

The previous prime is 8991901. The next prime is 8991967. The reversal of 8991960 is 691998.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8991967) 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, 37347 + ... + 37586.

Almost surely, 2^8991960 is an apocalyptic number.

It is an amenable number.

8991960 is an abundant number, since it is smaller than the sum of its proper divisors (17984280).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8991960 is a wasteful number, since it uses less digits than its factorization.

8991960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74947 (or 74943 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 42.

The square root of 8991960 is about 2998.6597005996. The cubic root of 8991960 is about 207.9464235778.

The spelling of 8991960 in words is "eight million, nine hundred ninety-one thousand, nine hundred sixty".