445532449 has 2 divisors, whose sum is σ = 445532450. Its totient is φ = 445532448.

The previous prime is 445532443. The next prime is 445532459. The reversal of 445532449 is 944235544.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 423742225 + 21790224 = 20585^2 + 4668^2 .

It is a cyclic number.

It is not a de Polignac number, because 445532449 - 2¹³ = 445524257 is a prime.

It is a super-2 number, since 2×445532449² = 396998326223875202, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (445532443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 222766224 + 222766225.

It is an arithmetic number, because the mean of its divisors is an integer number (222766225).

Almost surely, 2^445532449 is an apocalyptic number.

It is an amenable number.

445532449 is a deficient number, since it is larger than the sum of its proper divisors (1).

445532449 is an equidigital number, since it uses as much as digits as its factorization.

445532449 is an evil number, because the sum of its binary digits is even.

The product of its digits is 345600, while the sum is 40.

The square root of 445532449 is about 21107.6395885471. The cubic root of 445532449 is about 763.7650480667.

The spelling of 445532449 in words is "four hundred forty-five million, five hundred thirty-two thousand, four hundred forty-nine".