999897029 has 2 divisors, whose sum is σ = 999897030. Its totient is φ = 999897028.

The previous prime is 999897011. The next prime is 999897089. The reversal of 999897029 is 920798999.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 959574529 + 40322500 = 30977^2 + 6350^2 .

It is a cyclic number.

It is not a de Polignac number, because 999897029 - 2¹⁶ = 999831493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (999897089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499948514 + 499948515.

It is an arithmetic number, because the mean of its divisors is an integer number (499948515).

Almost surely, 2^999897029 is an apocalyptic number.

It is an amenable number.

999897029 is a deficient number, since it is larger than the sum of its proper divisors (1).

999897029 is an equidigital number, since it uses as much as digits as its factorization.

999897029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6613488, while the sum is 62.

The square root of 999897029 is about 31621.1484453048. The cubic root of 999897029 is about 999.9656751552.

It can be divided in two parts, 9998970 and 29, that added together give a palindrome (9998999).

The spelling of 999897029 in words is "nine hundred ninety-nine million, eight hundred ninety-seven thousand, twenty-nine".