445407 has 4 divisors (see below), whose sum is σ = 593880. Its totient is φ = 296936.

The previous prime is 445363. The next prime is 445427. The reversal of 445407 is 704544.

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

It is a cyclic number.

It is not a de Polignac number, because 445407 - 2⁷ = 445279 is a prime.

It is a D-number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 445407.

It is not an unprimeable number, because it can be changed into a prime (445427) 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, 74232 + ... + 74237.

It is an arithmetic number, because the mean of its divisors is an integer number (148470).

2⁴⁴⁵⁴⁰⁷ is an apocalyptic number.

445407 is a deficient number, since it is larger than the sum of its proper divisors (148473).

445407 is a wasteful number, since it uses less digits than its factorization.

445407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148472.

The product of its (nonzero) digits is 2240, while the sum is 24.

The square root of 445407 is about 667.3881928833. The cubic root of 445407 is about 76.3693356651.

The spelling of 445407 in words is "four hundred forty-five thousand, four hundred seven".