8490155 has 8 divisors (see below), whose sum is σ = 10303200. Its totient is φ = 6715456.

The previous prime is 8490143. The next prime is 8490179. The reversal of 8490155 is 5510948.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8490155 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9095 + ... + 9984.

It is an arithmetic number, because the mean of its divisors is an integer number (1287900).

Almost surely, 2^8490155 is an apocalyptic number.

8490155 is a deficient number, since it is larger than the sum of its proper divisors (1813045).

8490155 is a wasteful number, since it uses less digits than its factorization.

8490155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19173.

The product of its (nonzero) digits is 7200, while the sum is 32.

The square root of 8490155 is about 2913.7870546764. The cubic root of 8490155 is about 204.0039327064.

The spelling of 8490155 in words is "eight million, four hundred ninety thousand, one hundred fifty-five".