8445400 has 24 divisors (see below), whose sum is σ = 19636020. Its totient is φ = 3378080.

The previous prime is 8445377. The next prime is 8445419. The reversal of 8445400 is 45448.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

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 in 5 ways as a sum of consecutive naturals, for example, 20914 + ... + 21313.

Almost surely, 2^8445400 is an apocalyptic number.

It is an amenable number.

8445400 is an abundant number, since it is smaller than the sum of its proper divisors (11190620).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8445400 is a wasteful number, since it uses less digits than its factorization.

8445400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42243 (or 42234 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 25.

The square root of 8445400 is about 2906.0970389854. The cubic root of 8445400 is about 203.6448389040.

The spelling of 8445400 in words is "eight million, four hundred forty-five thousand, four hundred".