445136539 has 2 divisors, whose sum is σ = 445136540. Its totient is φ = 445136538.

The previous prime is 445136521. The next prime is 445136561. The reversal of 445136539 is 935631544.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 445136539 - 2¹³ = 445128347 is a prime.

It is not a weakly prime, because it can be changed into another prime (445136509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222568269 + 222568270.

It is an arithmetic number, because the mean of its divisors is an integer number (222568270).

Almost surely, 2^445136539 is an apocalyptic number.

445136539 is a deficient number, since it is larger than the sum of its proper divisors (1).

445136539 is an equidigital number, since it uses as much as digits as its factorization.

445136539 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 194400, while the sum is 40.

The square root of 445136539 is about 21098.2591461950. The cubic root of 445136539 is about 763.5387481770.

The spelling of 445136539 in words is "four hundred forty-five million, one hundred thirty-six thousand, five hundred thirty-nine".