445456426 has 4 divisors (see below), whose sum is σ = 668184642. Its totient is φ = 222728212.

The previous prime is 445456421. The next prime is 445456471. The reversal of 445456426 is 624654544.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 401962401 + 43494025 = 20049^2 + 6595^2 .

It is not an unprimeable number, because it can be changed into a prime (445456421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111364105 + ... + 111364108.

Almost surely, 2^445456426 is an apocalyptic number.

445456426 is a deficient number, since it is larger than the sum of its proper divisors (222728216).

445456426 is a wasteful number, since it uses less digits than its factorization.

445456426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 222728215.

The product of its digits is 460800, while the sum is 40.

The square root of 445456426 is about 21105.8386708512. The cubic root of 445456426 is about 763.7216041580.

The spelling of 445456426 in words is "four hundred forty-five million, four hundred fifty-six thousand, four hundred twenty-six".