999472697 has 2 divisors, whose sum is σ = 999472698. Its totient is φ = 999472696.

The previous prime is 999472673. The next prime is 999472699. The reversal of 999472697 is 796274999.

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., 646634041 + 352838656 = 25429^2 + 18784^2 .

It is a cyclic number.

It is not a de Polignac number, because 999472697 - 2²² = 995278393 is a prime.

Together with 999472699, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (999472699) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499736348 + 499736349.

It is an arithmetic number, because the mean of its divisors is an integer number (499736349).

Almost surely, 2^999472697 is an apocalyptic number.

It is an amenable number.

999472697 is a deficient number, since it is larger than the sum of its proper divisors (1).

999472697 is an equidigital number, since it uses as much as digits as its factorization.

999472697 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15431472, while the sum is 62.

The square root of 999472697 is about 31614.4381098257. The cubic root of 999472697 is about 999.8242014300.

The spelling of 999472697 in words is "nine hundred ninety-nine million, four hundred seventy-two thousand, six hundred ninety-seven".