974999999 has 2 divisors, whose sum is σ = 975000000. Its totient is φ = 974999998.

The previous prime is 974999989. The next prime is 975000023. The reversal of 974999999 is 999999479.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-974999999 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

974999999 is a modest number, since divided by 99999 gives 9749 as remainder.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (974999939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 487499999 + 487500000.

It is an arithmetic number, because the mean of its divisors is an integer number (487500000).

Almost surely, 2^974999999 is an apocalyptic number.

974999999 is a deficient number, since it is larger than the sum of its proper divisors (1).

974999999 is an equidigital number, since it uses as much as digits as its factorization.

974999999 is an evil number, because the sum of its binary digits is even.

The product of its digits is 133923132, while the sum is 74.

The square root of 974999999 is about 31224.9899759792. The cubic root of 974999999 is about 991.5962410014.

The spelling of 974999999 in words is "nine hundred seventy-four million, nine hundred ninety-nine thousand, nine hundred ninety-nine".