9478369409 has 2 divisors, whose sum is σ = 9478369410. Its totient is φ = 9478369408.

The previous prime is 9478369399. The next prime is 9478369429. The reversal of 9478369409 is 9049638749.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5982249025 + 3496120384 = 77345^2 + 59128^2 .

It is an emirp because it is prime and its reverse (9049638749) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9478369409 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (9478369429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4739184704 + 4739184705.

It is an arithmetic number, because the mean of its divisors is an integer number (4739184705).

Almost surely, 2^9478369409 is an apocalyptic number.

It is an amenable number.

9478369409 is a deficient number, since it is larger than the sum of its proper divisors (1).

9478369409 is an equidigital number, since it uses as much as digits as its factorization.

9478369409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11757312, while the sum is 59.

The square root of 9478369409 is about 97356.9176227350. The cubic root of 9478369409 is about 2116.3031430957.

The spelling of 9478369409 in words is "nine billion, four hundred seventy-eight million, three hundred sixty-nine thousand, four hundred nine".