999703157 has 2 divisors, whose sum is σ = 999703158. Its totient is φ = 999703156.

The previous prime is 999703079. The next prime is 999703189. The reversal of 999703157 is 751307999.

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., 834863236 + 164839921 = 28894^2 + 12839^2 .

It is a cyclic number.

It is not a de Polignac number, because 999703157 - 2¹⁰ = 999702133 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (999703057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499851578 + 499851579.

It is an arithmetic number, because the mean of its divisors is an integer number (499851579).

Almost surely, 2^999703157 is an apocalyptic number.

It is an amenable number.

999703157 is a deficient number, since it is larger than the sum of its proper divisors (1).

999703157 is an equidigital number, since it uses as much as digits as its factorization.

999703157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 535815, while the sum is 50.

The square root of 999703157 is about 31618.0827533866. The cubic root of 999703157 is about 999.9010425411.

The spelling of 999703157 in words is "nine hundred ninety-nine million, seven hundred three thousand, one hundred fifty-seven".