400336093 has 2 divisors, whose sum is σ = 400336094. Its totient is φ = 400336092.

The previous prime is 400336073. The next prime is 400336109. The reversal of 400336093 is 390633004.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 386594244 + 13741849 = 19662^2 + 3707^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-400336093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (400336003) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200168046 + 200168047.

It is an arithmetic number, because the mean of its divisors is an integer number (200168047).

Almost surely, 2^400336093 is an apocalyptic number.

It is an amenable number.

400336093 is a deficient number, since it is larger than the sum of its proper divisors (1).

400336093 is an equidigital number, since it uses as much as digits as its factorization.

400336093 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5832, while the sum is 28.

The square root of 400336093 is about 20008.4005607645. The cubic root of 400336093 is about 737.0126048239.

Adding to 400336093 its reverse (390633004), we get a palindrome (790969097).

The spelling of 400336093 in words is "four hundred million, three hundred thirty-six thousand, ninety-three".