445382121 has 4 divisors (see below), whose sum is σ = 593842832. Its totient is φ = 296921412.

The previous prime is 445382107. The next prime is 445382123. The reversal of 445382121 is 121283544.

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 not a de Polignac number, because 445382121 - 2⁹ = 445381609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (445382123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74230351 + ... + 74230356.

It is an arithmetic number, because the mean of its divisors is an integer number (148460708).

Almost surely, 2^445382121 is an apocalyptic number.

It is an amenable number.

445382121 is a deficient number, since it is larger than the sum of its proper divisors (148460711).

445382121 is a wasteful number, since it uses less digits than its factorization.

445382121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148460710.

The product of its digits is 7680, while the sum is 30.

The square root of 445382121 is about 21104.0783025462. The cubic root of 445382121 is about 763.6791372364.

The spelling of 445382121 in words is "four hundred forty-five million, three hundred eighty-two thousand, one hundred twenty-one".