409047619 has 2 divisors, whose sum is σ = 409047620. Its totient is φ = 409047618.

The previous prime is 409047593. The next prime is 409047641. The reversal of 409047619 is 916740904.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 409047619 - 2¹⁹ = 408523331 is a prime.

It is a super-2 number, since 2×409047619² = 334639909219138322, which contains 22 as substring.

It is a Chen prime.

409047619 is a modest number, since divided by 47619 gives 409 as remainder.

It is equal to p_21792766 and since 409047619 and 21792766 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (409047719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 204523809 + 204523810.

It is an arithmetic number, because the mean of its divisors is an integer number (204523810).

Almost surely, 2^409047619 is an apocalyptic number.

409047619 is a deficient number, since it is larger than the sum of its proper divisors (1).

409047619 is an equidigital number, since it uses as much as digits as its factorization.

409047619 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 409047619 is about 20224.9256858956. The cubic root of 409047619 is about 742.3202187291.

The spelling of 409047619 in words is "four hundred nine million, forty-seven thousand, six hundred nineteen".