406343144 has 8 divisors (see below), whose sum is σ = 761893410. Its totient is φ = 203171568.

The previous prime is 406343131. The next prime is 406343219. The reversal of 406343144 is 441343604.

It can be written as a sum of positive squares in only one way, i.e., 250842244 + 155500900 = 15838^2 + 12470^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×406343144² = 330229501351609472, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25396439 + ... + 25396454.

Almost surely, 2^406343144 is an apocalyptic number.

It is an amenable number.

406343144 is a deficient number, since it is larger than the sum of its proper divisors (355550266).

406343144 is a wasteful number, since it uses less digits than its factorization.

406343144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50792899 (or 50792895 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 29.

The square root of 406343144 is about 20157.9548565821. The cubic root of 406343144 is about 740.6806155937.

Adding to 406343144 its reverse (441343604), we get a palindrome (847686748).

The spelling of 406343144 in words is "four hundred six million, three hundred forty-three thousand, one hundred forty-four".