406400404246 has 4 divisors (see below), whose sum is σ = 609600606372. Its totient is φ = 203200202122.

The previous prime is 406400404243. The next prime is 406400404273. The reversal of 406400404246 is 642404004604.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×406400404246² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406400404243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101600101060 + ... + 101600101063.

It is an arithmetic number, because the mean of its divisors is an integer number (152400151593).

Almost surely, 2^406400404246 is an apocalyptic number.

406400404246 is a deficient number, since it is larger than the sum of its proper divisors (203200202126).

406400404246 is a wasteful number, since it uses less digits than its factorization.

406400404246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203200202125.

The product of its (nonzero) digits is 73728, while the sum is 34.

The spelling of 406400404246 in words is "four hundred six billion, four hundred million, four hundred four thousand, two hundred forty-six".