404545487 has 4 divisors (see below), whose sum is σ = 410087280. Its totient is φ = 399003696.

The previous prime is 404545451. The next prime is 404545489. The reversal of 404545487 is 784545404.

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 404545487 - 2⁸ = 404545231 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404545489) 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, 2770787 + ... + 2770932.

It is an arithmetic number, because the mean of its divisors is an integer number (102521820).

Almost surely, 2^404545487 is an apocalyptic number.

404545487 is a deficient number, since it is larger than the sum of its proper divisors (5541793).

404545487 is an equidigital number, since it uses as much as digits as its factorization.

404545487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5541792.

The product of its (nonzero) digits is 358400, while the sum is 41.

The square root of 404545487 is about 20113.3161611903. The cubic root of 404545487 is about 739.5867469828.

The spelling of 404545487 in words is "four hundred four million, five hundred forty-five thousand, four hundred eighty-seven".