999814967 has 2 divisors, whose sum is σ = 999814968. Its totient is φ = 999814966.

The previous prime is 999814951. The next prime is 999815009. The reversal of 999814967 is 769418999.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 999814967 - 2⁴ = 999814951 is a prime.

It is a super-2 number, since 2×999814967² = 1999259936474422178, which contains 22 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 (999814567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499907483 + 499907484.

It is an arithmetic number, because the mean of its divisors is an integer number (499907484).

Almost surely, 2^999814967 is an apocalyptic number.

999814967 is a deficient number, since it is larger than the sum of its proper divisors (1).

999814967 is an equidigital number, since it uses as much as digits as its factorization.

999814967 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8817984, while the sum is 62.

The square root of 999814967 is about 31619.8508377253. The cubic root of 999814967 is about 999.9383185288.

The spelling of 999814967 in words is "nine hundred ninety-nine million, eight hundred fourteen thousand, nine hundred sixty-seven".