409437963919 has 2 divisors, whose sum is σ = 409437963920. Its totient is φ = 409437963918.

The previous prime is 409437963829. The next prime is 409437963947. The reversal of 409437963919 is 919369734904.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 409437963919 - 2¹¹ = 409437961871 is a prime.

It is a super-2 number, since 2×409437963919² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (409437963619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 204718981959 + 204718981960.

It is an arithmetic number, because the mean of its divisors is an integer number (204718981960).

Almost surely, 2^409437963919 is an apocalyptic number.

409437963919 is a deficient number, since it is larger than the sum of its proper divisors (1).

409437963919 is an equidigital number, since it uses as much as digits as its factorization.

409437963919 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 39680928, while the sum is 64.

The spelling of 409437963919 in words is "four hundred nine billion, four hundred thirty-seven million, nine hundred sixty-three thousand, nine hundred nineteen".