999999151 has 2 divisors, whose sum is σ = 999999152. Its totient is φ = 999999150.

The previous prime is 999999137. The next prime is 999999163. The reversal of 999999151 is 151999999.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 999999151 - 2⁹ = 999998639 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 999999151.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (999999131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499999575 + 499999576.

It is an arithmetic number, because the mean of its divisors is an integer number (499999576).

Almost surely, 2^999999151 is an apocalyptic number.

999999151 is a deficient number, since it is larger than the sum of its proper divisors (1).

999999151 is an equidigital number, since it uses as much as digits as its factorization.

999999151 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2657205, while the sum is 61.

The square root of 999999151 is about 31622.7631778123. The cubic root of 999999151 is about 999.9997169999. Note that the first 3 decimals are identical.

The spelling of 999999151 in words is "nine hundred ninety-nine million, nine hundred ninety-nine thousand, one hundred fifty-one".