404895645 has 96 divisors (see below), whose sum is σ = 904485120. Its totient is φ = 168220800.

The previous prime is 404895641. The next prime is 404895653. The reversal of 404895645 is 546598404.

404895645 is a `hidden beast` number, since 4 + 0 + 4 + 89 + 564 + 5 = 666.

It is not a de Polignac number, because 404895645 - 2² = 404895641 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 404895645.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404895641) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 112575 + ... + 116115.

It is an arithmetic number, because the mean of its divisors is an integer number (9421720).

Almost surely, 2^404895645 is an apocalyptic number.

404895645 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

404895645 is an abundant number, since it is smaller than the sum of its proper divisors (499589475).

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

404895645 is a wasteful number, since it uses less digits than its factorization.

404895645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3584 (or 3567 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 45.

The square root of 404895645 is about 20122.0189096422. The cubic root of 404895645 is about 739.8000707760.

The spelling of 404895645 in words is "four hundred four million, eight hundred ninety-five thousand, six hundred forty-five".