445234919 has 2 divisors, whose sum is σ = 445234920. Its totient is φ = 445234918.

The previous prime is 445234877. The next prime is 445234921. The reversal of 445234919 is 919432544.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 445234919 - 2²⁰ = 444186343 is a prime.

It is a super-2 number, since 2×445234919² = 396468266193873122, which contains 22 as substring.

Together with 445234921, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (445234969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222617459 + 222617460.

It is an arithmetic number, because the mean of its divisors is an integer number (222617460).

Almost surely, 2^445234919 is an apocalyptic number.

445234919 is a deficient number, since it is larger than the sum of its proper divisors (1).

445234919 is an equidigital number, since it uses as much as digits as its factorization.

445234919 is an evil number, because the sum of its binary digits is even.

The product of its digits is 155520, while the sum is 41.

The square root of 445234919 is about 21100.5904893678. The cubic root of 445234919 is about 763.5949941466.

The spelling of 445234919 in words is "four hundred forty-five million, two hundred thirty-four thousand, nine hundred nineteen".