445539979 has 2 divisors, whose sum is σ = 445539980. Its totient is φ = 445539978.

The previous prime is 445539973. The next prime is 445540033. The reversal of 445539979 is 979935544.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 445539979 - 2³ = 445539971 is a prime.

It is not a weakly prime, because it can be changed into another prime (445539971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222769989 + 222769990.

It is an arithmetic number, because the mean of its divisors is an integer number (222769990).

Almost surely, 2^445539979 is an apocalyptic number.

445539979 is a deficient number, since it is larger than the sum of its proper divisors (1).

445539979 is an equidigital number, since it uses as much as digits as its factorization.

445539979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6123600, while the sum is 55.

The square root of 445539979 is about 21107.8179592302. The cubic root of 445539979 is about 763.7693508722.

The spelling of 445539979 in words is "four hundred forty-five million, five hundred thirty-nine thousand, nine hundred seventy-nine".