400036573 has 2 divisors, whose sum is σ = 400036574. Its totient is φ = 400036572.

The previous prime is 400036547. The next prime is 400036589. The reversal of 400036573 is 375630004.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 385611769 + 14424804 = 19637^2 + 3798^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-400036573 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (400036523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200018286 + 200018287.

It is an arithmetic number, because the mean of its divisors is an integer number (200018287).

Almost surely, 2^400036573 is an apocalyptic number.

It is an amenable number.

400036573 is a deficient number, since it is larger than the sum of its proper divisors (1).

400036573 is an equidigital number, since it uses as much as digits as its factorization.

400036573 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7560, while the sum is 28.

The square root of 400036573 is about 20000.9143041012. The cubic root of 400036573 is about 736.8287550577.

Adding to 400036573 its reverse (375630004), we get a palindrome (775666577).

The spelling of 400036573 in words is "four hundred million, thirty-six thousand, five hundred seventy-three".