445121419 has 4 divisors (see below), whose sum is σ = 446266080. Its totient is φ = 443976760.

The previous prime is 445121399. The next prime is 445121431. The reversal of 445121419 is 914121544.

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 445121419 - 2⁷ = 445121291 is a prime.

It is a super-2 number, since 2×445121419² = 396266155305147122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (445131419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 571747 + ... + 572524.

It is an arithmetic number, because the mean of its divisors is an integer number (111566520).

Almost surely, 2^445121419 is an apocalyptic number.

445121419 is a deficient number, since it is larger than the sum of its proper divisors (1144661).

445121419 is a wasteful number, since it uses less digits than its factorization.

445121419 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1144660.

The product of its digits is 5760, while the sum is 31.

The square root of 445121419 is about 21097.9008197498. The cubic root of 445121419 is about 763.5301030119.

The spelling of 445121419 in words is "four hundred forty-five million, one hundred twenty-one thousand, four hundred nineteen".