406813049 has 2 divisors, whose sum is σ = 406813050. Its totient is φ = 406813048.

The previous prime is 406813027. The next prime is 406813051. The reversal of 406813049 is 940318604.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 394737424 + 12075625 = 19868^2 + 3475^2 .

It is a cyclic number.

It is not a de Polignac number, because 406813049 - 2²⁰ = 405764473 is a prime.

Together with 406813051, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (406813249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203406524 + 203406525.

It is an arithmetic number, because the mean of its divisors is an integer number (203406525).

Almost surely, 2^406813049 is an apocalyptic number.

It is an amenable number.

406813049 is a deficient number, since it is larger than the sum of its proper divisors (1).

406813049 is an equidigital number, since it uses as much as digits as its factorization.

406813049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 406813049 is about 20169.6070611205. The cubic root of 406813049 is about 740.9660192413.

The spelling of 406813049 in words is "four hundred six million, eight hundred thirteen thousand, forty-nine".