999974447 has 2 divisors, whose sum is σ = 999974448. Its totient is φ = 999974446.

The previous prime is 999974441. The next prime is 999974453. The reversal of 999974447 is 744479999.

It is a balanced prime because it is at equal distance from previous prime (999974441) and next prime (999974453).

It is a cyclic number.

It is not a de Polignac number, because 999974447 - 2⁶ = 999974383 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 999974447.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (999974441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499987223 + 499987224.

It is an arithmetic number, because the mean of its divisors is an integer number (499987224).

Almost surely, 2^999974447 is an apocalyptic number.

999974447 is a deficient number, since it is larger than the sum of its proper divisors (1).

999974447 is an equidigital number, since it uses as much as digits as its factorization.

999974447 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20575296, while the sum is 62.

The square root of 999974447 is about 31622.3725706975. The cubic root of 999974447 is about 999.9914822608.

The spelling of 999974447 in words is "nine hundred ninety-nine million, nine hundred seventy-four thousand, four hundred forty-seven".