413393821 has 2 divisors, whose sum is σ = 413393822. Its totient is φ = 413393820.

The previous prime is 413393809. The next prime is 413393831. The reversal of 413393821 is 128393314.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 360468196 + 52925625 = 18986^2 + 7275^2 .

It is a cyclic number.

It is not a de Polignac number, because 413393821 - 2¹³ = 413385629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (413393831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 206696910 + 206696911.

It is an arithmetic number, because the mean of its divisors is an integer number (206696911).

Almost surely, 2^413393821 is an apocalyptic number.

It is an amenable number.

413393821 is a deficient number, since it is larger than the sum of its proper divisors (1).

413393821 is an equidigital number, since it uses as much as digits as its factorization.

413393821 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15552, while the sum is 34.

The square root of 413393821 is about 20332.0884564277. The cubic root of 413393821 is about 744.9400555345.

The spelling of 413393821 in words is "four hundred thirteen million, three hundred ninety-three thousand, eight hundred twenty-one".