9918407 has 2 divisors, whose sum is σ = 9918408. Its totient is φ = 9918406.

The previous prime is 9918383. The next prime is 9918409. The reversal of 9918407 is 7048199.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 9918407 - 2¹⁴ = 9902023 is a prime.

Together with 9918409, it forms a pair of twin primes.

It is a Chen prime.

It is equal to p₆₅₉₅₇₆ and since 9918407 and 659576 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9918409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4959203 + 4959204.

It is an arithmetic number, because the mean of its divisors is an integer number (4959204).

Almost surely, 2^9918407 is an apocalyptic number.

9918407 is a deficient number, since it is larger than the sum of its proper divisors (1).

9918407 is an equidigital number, since it uses as much as digits as its factorization.

9918407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 38.

The square root of 9918407 is about 3149.3502504485. The cubic root of 9918407 is about 214.8559121106.

The spelling of 9918407 in words is "nine million, nine hundred eighteen thousand, four hundred seven".