452129985 has 64 divisors (see below), whose sum is σ = 850176000. Its totient is φ = 227344320.

The previous prime is 452129983. The next prime is 452130031. The reversal of 452129985 is 589921254.

It is a happy number.

It is not a de Polignac number, because 452129985 - 2¹ = 452129983 is a prime.

It is a super-2 number, since 2×452129985² = 408843046672200450, which contains 22 as substring.

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 452129985.

It is not an unprimeable number, because it can be changed into a prime (452129983) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 920590 + ... + 921080.

It is an arithmetic number, because the mean of its divisors is an integer number (13284000).

Almost surely, 2^452129985 is an apocalyptic number.

452129985 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

452129985 is a deficient number, since it is larger than the sum of its proper divisors (398046015).

452129985 is a wasteful number, since it uses less digits than its factorization.

452129985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 883 (or 877 counting only the distinct ones).

The product of its digits is 259200, while the sum is 45.

The square root of 452129985 is about 21263.3483957725. The cubic root of 452129985 is about 767.5165872622.

The spelling of 452129985 in words is "four hundred fifty-two million, one hundred twenty-nine thousand, nine hundred eighty-five".