445942291 has 2 divisors, whose sum is σ = 445942292. Its totient is φ = 445942290.

The previous prime is 445942253. The next prime is 445942307. The reversal of 445942291 is 192249544.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 445942291 - 2²¹ = 443845139 is a prime.

It is not a weakly prime, because it can be changed into another prime (445942201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222971145 + 222971146.

It is an arithmetic number, because the mean of its divisors is an integer number (222971146).

Almost surely, 2^445942291 is an apocalyptic number.

445942291 is a deficient number, since it is larger than the sum of its proper divisors (1).

445942291 is an equidigital number, since it uses as much as digits as its factorization.

445942291 is an evil number, because the sum of its binary digits is even.

The product of its digits is 103680, while the sum is 40.

The square root of 445942291 is about 21117.3457375684. The cubic root of 445942291 is about 763.9991702293. Note that the first 3 decimals are identical.

The spelling of 445942291 in words is "four hundred forty-five million, nine hundred forty-two thousand, two hundred ninety-one".