445620961 has 4 divisors (see below), whose sum is σ = 446126512. Its totient is φ = 445115412.

The previous prime is 445620943. The next prime is 445620971. The reversal of 445620961 is 169026544.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 445620961 - 2²³ = 437232353 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 445620961.

It is not an unprimeable number, because it can be changed into a prime (445620971) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 251451 + ... + 253216.

It is an arithmetic number, because the mean of its divisors is an integer number (111531628).

Almost surely, 2^445620961 is an apocalyptic number.

It is an amenable number.

445620961 is a deficient number, since it is larger than the sum of its proper divisors (505551).

445620961 is an equidigital number, since it uses as much as digits as its factorization.

445620961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505550.

The product of its (nonzero) digits is 51840, while the sum is 37.

The square root of 445620961 is about 21109.7361660443. The cubic root of 445620961 is about 763.8156226813.

The spelling of 445620961 in words is "four hundred forty-five million, six hundred twenty thousand, nine hundred sixty-one".