445490017 has 24 divisors (see below), whose sum is σ = 557159040. Its totient is φ = 354019680.

The previous prime is 445490011. The next prime is 445490021. The reversal of 445490017 is 710094544.

It is not a de Polignac number, because 445490017 - 2¹⁵ = 445457249 is a prime.

It is a super-2 number, since 2×445490017² = 396922710493320578, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (445490011) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 38667 + ... + 48847.

It is an arithmetic number, because the mean of its divisors is an integer number (23214960).

Almost surely, 2^445490017 is an apocalyptic number.

445490017 is a gapful number since it is divisible by the number (47) formed by its first and last digit.

It is an amenable number.

445490017 is a deficient number, since it is larger than the sum of its proper divisors (111669023).

445490017 is a wasteful number, since it uses less digits than its factorization.

445490017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10261 (or 10254 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 445490017 is about 21106.6344309082. The cubic root of 445490017 is about 763.7408005942.

The spelling of 445490017 in words is "four hundred forty-five million, four hundred ninety thousand, seventeen".