9400019 has 2 divisors, whose sum is σ = 9400020. Its totient is φ = 9400018.

The previous prime is 9400009. The next prime is 9400021. The reversal of 9400019 is 9100049.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9400019 - 2¹² = 9395923 is a prime.

It is a super-2 number, since 2×9400019² = 176720714400722, which contains 22 as substring.

Together with 9400021, it forms a pair of twin primes.

It is a Chen prime.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 9399967 and 9400003.

It is not a weakly prime, because it can be changed into another prime (9400009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4700009 + 4700010.

It is an arithmetic number, because the mean of its divisors is an integer number (4700010).

Almost surely, 2^9400019 is an apocalyptic number.

9400019 is a deficient number, since it is larger than the sum of its proper divisors (1).

9400019 is an equidigital number, since it uses as much as digits as its factorization.

9400019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 23.

The square root of 9400019 is about 3065.9450419080. The cubic root of 9400019 is about 211.0455716426.

The spelling of 9400019 in words is "nine million, four hundred thousand, nineteen".