9959840419 has 2 divisors, whose sum is σ = 9959840420. Its totient is φ = 9959840418.

The previous prime is 9959840393. The next prime is 9959840441. The reversal of 9959840419 is 9140489599.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (9140489599) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9959840419 - 2⁷ = 9959840291 is a prime.

It is a super-2 number, since 2×9959840419² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (9959840479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4979920209 + 4979920210.

It is an arithmetic number, because the mean of its divisors is an integer number (4979920210).

Almost surely, 2^9959840419 is an apocalyptic number.

9959840419 is a deficient number, since it is larger than the sum of its proper divisors (1).

9959840419 is an equidigital number, since it uses as much as digits as its factorization.

9959840419 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4199040, while the sum is 58.

The square root of 9959840419 is about 99799.0000901813. Note that the first 4 decimals coincide. The cubic root of 9959840419 is about 2151.5467808527.

The spelling of 9959840419 in words is "nine billion, nine hundred fifty-nine million, eight hundred forty thousand, four hundred nineteen".