9426409 has 2 divisors, whose sum is σ = 9426410. Its totient is φ = 9426408.

The previous prime is 9426397. The next prime is 9426427. The reversal of 9426409 is 9046249.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9000000 + 426409 = 3000^2 + 653^2 .

It is an emirp because it is prime and its reverse (9046249) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 9426409 - 2⁵ = 9426377 is a prime.

It is not a weakly prime, because it can be changed into another prime (9426499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4713204 + 4713205.

It is an arithmetic number, because the mean of its divisors is an integer number (4713205).

Almost surely, 2^9426409 is an apocalyptic number.

It is an amenable number.

9426409 is a deficient number, since it is larger than the sum of its proper divisors (1).

9426409 is an equidigital number, since it uses as much as digits as its factorization.

9426409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 9426409 is about 3070.2457556359. The cubic root of 9426409 is about 211.2428864474.

It can be divided in two parts, 9 and 426409, that multiplied together give a square (3837681 = 1959²).

The spelling of 9426409 in words is "nine million, four hundred twenty-six thousand, four hundred nine".