400341593 has 2 divisors, whose sum is σ = 400341594. Its totient is φ = 400341592.

The previous prime is 400341587. The next prime is 400341649. The reversal of 400341593 is 395143004.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 398920729 + 1420864 = 19973^2 + 1192^2 .

It is a cyclic number.

It is not a de Polignac number, because 400341593 - 2⁴ = 400341577 is a prime.

It is a super-3 number, since 3×400341593³ (a number of 27 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (400341793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200170796 + 200170797.

It is an arithmetic number, because the mean of its divisors is an integer number (200170797).

Almost surely, 2^400341593 is an apocalyptic number.

It is an amenable number.

400341593 is a deficient number, since it is larger than the sum of its proper divisors (1).

400341593 is an equidigital number, since it uses as much as digits as its factorization.

400341593 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 400341593 is about 20008.5380025628. The cubic root of 400341593 is about 737.0159799469.

Adding to 400341593 its reverse (395143004), we get a palindrome (795484597).

The spelling of 400341593 in words is "four hundred million, three hundred forty-one thousand, five hundred ninety-three".