401784413 has 2 divisors, whose sum is σ = 401784414. Its totient is φ = 401784412.

The previous prime is 401784403. The next prime is 401784419. The reversal of 401784413 is 314487104.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 392554969 + 9229444 = 19813^2 + 3038^2 .

It is a cyclic number.

It is not a de Polignac number, because 401784413 - 2⁸ = 401784157 is a prime.

It is a super-2 number, since 2×401784413² = 322861429059509138, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 401784413.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (401784419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200892206 + 200892207.

It is an arithmetic number, because the mean of its divisors is an integer number (200892207).

Almost surely, 2^401784413 is an apocalyptic number.

It is an amenable number.

401784413 is a deficient number, since it is larger than the sum of its proper divisors (1).

401784413 is an equidigital number, since it uses as much as digits as its factorization.

401784413 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 401784413 is about 20044.5606836368. The cubic root of 401784413 is about 737.9003134767.

The spelling of 401784413 in words is "four hundred one million, seven hundred eighty-four thousand, four hundred thirteen".