204491469 has 64 divisors (see below), whose sum is σ = 352206848. Its totient is φ = 102643200.

The previous prime is 204491461. The next prime is 204491491. The reversal of 204491469 is 964194402.

It is not a de Polignac number, because 204491469 - 2³ = 204491461 is a prime.

It is a super-2 number, since 2×204491469² = 83633521787555922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204491461) 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, 617634 + ... + 617964.

It is an arithmetic number, because the mean of its divisors is an integer number (5503232).

Almost surely, 2^204491469 is an apocalyptic number.

It is an amenable number.

204491469 is a deficient number, since it is larger than the sum of its proper divisors (147715379).

204491469 is a wasteful number, since it uses less digits than its factorization.

204491469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 458.

The product of its (nonzero) digits is 62208, while the sum is 39.

The square root of 204491469 is about 14300.0513635441. The cubic root of 204491469 is about 589.1488915580.

The spelling of 204491469 in words is "two hundred four million, four hundred ninety-one thousand, four hundred sixty-nine".