445465491 has 16 divisors (see below), whose sum is σ = 622860960. Its totient is φ = 282804480.

The previous prime is 445465487. The next prime is 445465511. The reversal of 445465491 is 194564544.

It is not a de Polignac number, because 445465491 - 2² = 445465487 is a prime.

It is not an unprimeable number, because it can be changed into a prime (445465411) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28720 + ... + 41421.

It is an arithmetic number, because the mean of its divisors is an integer number (38928810).

Almost surely, 2^445465491 is an apocalyptic number.

445465491 is a deficient number, since it is larger than the sum of its proper divisors (177395469).

445465491 is a wasteful number, since it uses less digits than its factorization.

445465491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70246.

The product of its digits is 345600, while the sum is 42.

The square root of 445465491 is about 21106.0534207606. The cubic root of 445465491 is about 763.7267846792.

The spelling of 445465491 in words is "four hundred forty-five million, four hundred sixty-five thousand, four hundred ninety-one".