4497990155 has 4 divisors (see below), whose sum is σ = 5397588192. Its totient is φ = 3598392120.

The previous prime is 4497990151. The next prime is 4497990181. The reversal of 4497990155 is 5510997944.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 4497990155 - 2² = 4497990151 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4497990097 and 4497990106.

It is not an unprimeable number, because it can be changed into a prime (4497990151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 449799011 + ... + 449799020.

It is an arithmetic number, because the mean of its divisors is an integer number (1349397048).

Almost surely, 2^4497990155 is an apocalyptic number.

4497990155 is a deficient number, since it is larger than the sum of its proper divisors (899598037).

4497990155 is an equidigital number, since it uses as much as digits as its factorization.

4497990155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 899598036.

The product of its (nonzero) digits is 2041200, while the sum is 53.

The square root of 4497990155 is about 67067.0571517791. The cubic root of 4497990155 is about 1650.7177966613.

The spelling of 4497990155 in words is "four billion, four hundred ninety-seven million, nine hundred ninety thousand, one hundred fifty-five".