400340133 has 12 divisors (see below), whose sum is σ = 587749708. Its totient is φ = 262517760.

The previous prime is 400340131. The next prime is 400340137. The reversal of 400340133 is 331043004.

It can be written as a sum of positive squares in 2 ways, for example, as 99560484 + 300779649 = 9978^2 + 17343^2 .

It is not a de Polignac number, because 400340133 - 2¹ = 400340131 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (400340131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 364060 + ... + 365157.

Almost surely, 2^400340133 is an apocalyptic number.

It is an amenable number.

400340133 is a deficient number, since it is larger than the sum of its proper divisors (187409575).

400340133 is a wasteful number, since it uses less digits than its factorization.

400340133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 729284 (or 729281 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 400340133 is about 20008.5015181047. The cubic root of 400340133 is about 737.0150840082.

Adding to 400340133 its reverse (331043004), we get a palindrome (731383137).

The spelling of 400340133 in words is "four hundred million, three hundred forty thousand, one hundred thirty-three".