445890499 has 4 divisors (see below), whose sum is σ = 469358440. Its totient is φ = 422422560.

The previous prime is 445890491. The next prime is 445890503. The reversal of 445890499 is 994098544.

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

It is a cyclic number.

It is not a de Polignac number, because 445890499 - 2³ = 445890491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (445890491) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11733942 + ... + 11733979.

It is an arithmetic number, because the mean of its divisors is an integer number (117339610).

Almost surely, 2^445890499 is an apocalyptic number.

445890499 is a deficient number, since it is larger than the sum of its proper divisors (23467941).

445890499 is a wasteful number, since it uses less digits than its factorization.

445890499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23467940.

The product of its (nonzero) digits is 1866240, while the sum is 52.

The square root of 445890499 is about 21116.1194114828. The cubic root of 445890499 is about 763.9695919798.

The spelling of 445890499 in words is "four hundred forty-five million, eight hundred ninety thousand, four hundred ninety-nine".