409904797 has 8 divisors (see below), whose sum is σ = 416802240. Its totient is φ = 403038720.

The previous prime is 409904791. The next prime is 409904857. The reversal of 409904797 is 797409904.

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

It is a cyclic number.

It is not a de Polignac number, because 409904797 - 2¹¹ = 409902749 is a prime.

It is a super-2 number, since 2×409904797² = 336043885207222418, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 409904797.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (409904791) 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, 19293 + ... + 34525.

It is an arithmetic number, because the mean of its divisors is an integer number (52100280).

Almost surely, 2^409904797 is an apocalyptic number.

It is an amenable number.

409904797 is a deficient number, since it is larger than the sum of its proper divisors (6897443).

409904797 is a wasteful number, since it uses less digits than its factorization.

409904797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15683.

The product of its (nonzero) digits is 571536, while the sum is 49.

The square root of 409904797 is about 20246.1057243115. The cubic root of 409904797 is about 742.8383789481.

The spelling of 409904797 in words is "four hundred nine million, nine hundred four thousand, seven hundred ninety-seven".