409399863 has 8 divisors (see below), whose sum is σ = 547008000. Its totient is φ = 272362488.

The previous prime is 409399847. The next prime is 409399871. The reversal of 409399863 is 368993904.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 409399863 - 2⁴ = 409399847 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (409399843) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 141013 + ... + 143886.

It is an arithmetic number, because the mean of its divisors is an integer number (68376000).

Almost surely, 2^409399863 is an apocalyptic number.

409399863 is a deficient number, since it is larger than the sum of its proper divisors (137608137).

409399863 is a wasteful number, since it uses less digits than its factorization.

409399863 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285381.

The product of its (nonzero) digits is 1259712, while the sum is 51.

The square root of 409399863 is about 20233.6319774775. The cubic root of 409399863 is about 742.5332361637.

The spelling of 409399863 in words is "four hundred nine million, three hundred ninety-nine thousand, eight hundred sixty-three".