999270157 has 2 divisors, whose sum is σ = 999270158. Its totient is φ = 999270156.

The previous prime is 999270119. The next prime is 999270193. The reversal of 999270157 is 751072999.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 955366281 + 43903876 = 30909^2 + 6626^2 .

It is a cyclic number.

It is not a de Polignac number, because 999270157 - 2¹⁵ = 999237389 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 999270157.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (999270257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499635078 + 499635079.

It is an arithmetic number, because the mean of its divisors is an integer number (499635079).

Almost surely, 2^999270157 is an apocalyptic number.

It is an amenable number.

999270157 is a deficient number, since it is larger than the sum of its proper divisors (1).

999270157 is an equidigital number, since it uses as much as digits as its factorization.

999270157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 357210, while the sum is 49.

The square root of 999270157 is about 31611.2346642772. The cubic root of 999270157 is about 999.7566597903.

The spelling of 999270157 in words is "nine hundred ninety-nine million, two hundred seventy thousand, one hundred fifty-seven".