9401309 has 2 divisors, whose sum is σ = 9401310. Its totient is φ = 9401308.

The previous prime is 9401279. The next prime is 9401311. The reversal of 9401309 is 9031049.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6744409 + 2656900 = 2597^2 + 1630^2 .

It is a cyclic number.

It is not a de Polignac number, because 9401309 - 2⁸ = 9401053 is a prime.

It is a super-2 number, since 2×9401309² = 176769221826962, which contains 22 as substring.

Together with 9401311, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9401369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4700654 + 4700655.

It is an arithmetic number, because the mean of its divisors is an integer number (4700655).

Almost surely, 2^9401309 is an apocalyptic number.

It is an amenable number.

9401309 is a deficient number, since it is larger than the sum of its proper divisors (1).

9401309 is an equidigital number, since it uses as much as digits as its factorization.

9401309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 972, while the sum is 26.

The square root of 9401309 is about 3066.1554102817. The cubic root of 9401309 is about 211.0552253939.

The spelling of 9401309 in words is "nine million, four hundred one thousand, three hundred nine".