409898263 has 4 divisors (see below), whose sum is σ = 411015520. Its totient is φ = 408781008.

The previous prime is 409898257. The next prime is 409898273. The reversal of 409898263 is 362898904.

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 409898263 - 2¹⁷ = 409767191 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 (409898243) 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, 558078 + ... + 558811.

It is an arithmetic number, because the mean of its divisors is an integer number (102753880).

Almost surely, 2^409898263 is an apocalyptic number.

409898263 is a deficient number, since it is larger than the sum of its proper divisors (1117257).

409898263 is a wasteful number, since it uses less digits than its factorization.

409898263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1117256.

The product of its (nonzero) digits is 746496, while the sum is 49.

The square root of 409898263 is about 20245.9443593032. The cubic root of 409898263 is about 742.8344319082.

The spelling of 409898263 in words is "four hundred nine million, eight hundred ninety-eight thousand, two hundred sixty-three".