403400093 has 2 divisors, whose sum is σ = 403400094. Its totient is φ = 403400092.

The previous prime is 403400047. The next prime is 403400131. The reversal of 403400093 is 390004304.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 400720324 + 2679769 = 20018^2 + 1637^2 .

It is a cyclic number.

It is not a de Polignac number, because 403400093 - 2¹⁴ = 403383709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (403400033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201700046 + 201700047.

It is an arithmetic number, because the mean of its divisors is an integer number (201700047).

Almost surely, 2^403400093 is an apocalyptic number.

It is an amenable number.

403400093 is a deficient number, since it is larger than the sum of its proper divisors (1).

403400093 is an equidigital number, since it uses as much as digits as its factorization.

403400093 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 403400093 is about 20084.8224537834. The cubic root of 403400093 is about 738.8880872155. Note that the first 3 decimals are identical.

Adding to 403400093 its reverse (390004304), we get a palindrome (793404397).

The spelling of 403400093 in words is "four hundred three million, four hundred thousand, ninety-three".