406801823 has 16 divisors (see below), whose sum is σ = 442182240. Its totient is φ = 372827136.

The previous prime is 406801819. The next prime is 406801831. The reversal of 406801823 is 328108604.

It is not a de Polignac number, because 406801823 - 2² = 406801819 is a prime.

It is a super-2 number, since 2×406801823² = 330975446392246658, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 406801823.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406801123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 99365 + ... + 103377.

It is an arithmetic number, because the mean of its divisors is an integer number (27636390).

Almost surely, 2^406801823 is an apocalyptic number.

406801823 is a deficient number, since it is larger than the sum of its proper divisors (35380417).

406801823 is a wasteful number, since it uses less digits than its factorization.

406801823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4186.

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 406801823 is about 20169.3287691980. The cubic root of 406801823 is about 740.9592035299.

The spelling of 406801823 in words is "four hundred six million, eight hundred one thousand, eight hundred twenty-three".