1029444881 has 2 divisors, whose sum is σ = 1029444882. Its totient is φ = 1029444880.

The previous prime is 1029444863. The next prime is 1029444887. The reversal of 1029444881 is 1884449201.

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., 718240000 + 311204881 = 26800^2 + 17641^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1029444881 is a prime.

It is a super-2 number, since 2×1029444881² = 2119513526034208322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1029444887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 514722440 + 514722441.

It is an arithmetic number, because the mean of its divisors is an integer number (514722441).

Almost surely, 2^1029444881 is an apocalyptic number.

It is an amenable number.

1029444881 is a deficient number, since it is larger than the sum of its proper divisors (1).

1029444881 is an equidigital number, since it uses as much as digits as its factorization.

1029444881 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 73728, while the sum is 41.

The square root of 1029444881 is about 32084.9634720066. The cubic root of 1029444881 is about 1009.7201724545.

The spelling of 1029444881 in words is "one billion, twenty-nine million, four hundred forty-four thousand, eight hundred eighty-one".