452390406 has 64 divisors (see below), whose sum is σ = 997920000. Its totient is φ = 135870336.

The previous prime is 452390377. The next prime is 452390461. The reversal of 452390406 is 604093254.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 906345 + ... + 906843.

It is an arithmetic number, because the mean of its divisors is an integer number (15592500).

Almost surely, 2^452390406 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 452390406, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (498960000).

452390406 is an abundant number, since it is smaller than the sum of its proper divisors (545529594).

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

452390406 is a wasteful number, since it uses less digits than its factorization.

452390406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 773.

The product of its (nonzero) digits is 25920, while the sum is 33.

The square root of 452390406 is about 21269.4712205076. The cubic root of 452390406 is about 767.6639188413.

The spelling of 452390406 in words is "four hundred fifty-two million, three hundred ninety thousand, four hundred six".