405000445 has 16 divisors (see below), whose sum is σ = 518931072. Its totient is φ = 302702400.

The previous prime is 405000437. The next prime is 405000473. The reversal of 405000445 is 544000504.

It is not a de Polignac number, because 405000445 - 2³ = 405000437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36006 + ... + 45895.

It is an arithmetic number, because the mean of its divisors is an integer number (32433192).

Almost surely, 2^405000445 is an apocalyptic number.

It is an amenable number.

405000445 is a deficient number, since it is larger than the sum of its proper divisors (113930627).

405000445 is a wasteful number, since it uses less digits than its factorization.

405000445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81972.

The product of its (nonzero) digits is 1600, while the sum is 22.

The square root of 405000445 is about 20124.6228536090. The cubic root of 405000445 is about 739.8638932779.

Adding to 405000445 its reverse (544000504), we get a palindrome (949000949).

The spelling of 405000445 in words is "four hundred five million, four hundred forty-five", and thus it is an aban number.