999348407 has 2 divisors, whose sum is σ = 999348408. Its totient is φ = 999348406.

The previous prime is 999348401. The next prime is 999348419. The reversal of 999348407 is 704843999.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 999348407 - 2⁸ = 999348151 is a prime.

It is a super-3 number, since 3×999348407³ (a number of 28 digits) contains 333 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (999348401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499674203 + 499674204.

It is an arithmetic number, because the mean of its divisors is an integer number (499674204).

Almost surely, 2^999348407 is an apocalyptic number.

999348407 is a deficient number, since it is larger than the sum of its proper divisors (1).

999348407 is an equidigital number, since it uses as much as digits as its factorization.

999348407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1959552, while the sum is 53.

The square root of 999348407 is about 31612.4723329258. The cubic root of 999348407 is about 999.7827551414.

The spelling of 999348407 in words is "nine hundred ninety-nine million, three hundred forty-eight thousand, four hundred seven".