1000256099 has 2 divisors, whose sum is σ = 1000256100. Its totient is φ = 1000256098.

The previous prime is 1000256077. The next prime is 1000256107. The reversal of 1000256099 is 9906520001.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1000256099 is a prime.

It is not a weakly prime, because it can be changed into another prime (1000256029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500128049 + 500128050.

It is an arithmetic number, because the mean of its divisors is an integer number (500128050).

Almost surely, 2^1000256099 is an apocalyptic number.

1000256099 is a deficient number, since it is larger than the sum of its proper divisors (1).

1000256099 is an equidigital number, since it uses as much as digits as its factorization.

1000256099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4860, while the sum is 32.

The square root of 1000256099 is about 31626.8256231953. The cubic root of 1000256099 is about 1000.0853590470.

The spelling of 1000256099 in words is "one billion, two hundred fifty-six thousand, ninety-nine".