89447051929 has 9 divisors (see below), whose sum is σ = 92646774493. Its totient is φ = 86354296672.

The previous prime is 89447051909. The next prime is 89447051983. The reversal of 89447051929 is 92915074498.

The square root of 89447051929 is 299077.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 373455625 + 89073596304 = 19325^2 + 298452^2 .

It is not a de Polignac number, because 89447051929 - 2¹⁵ = 89447019161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (89447051909) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 8668077 + ... + 8678389.

Almost surely, 2^89447051929 is an apocalyptic number.

89447051929 is the 299077-th square number.

89447051929 is the 149539-th centered octagonal number.

It is an amenable number.

89447051929 is a deficient number, since it is larger than the sum of its proper divisors (3199722564).

89447051929 is an frugal number, since it uses more digits than its factorization.

89447051929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20684 (or 10342 counting only the distinct ones).

The product of its (nonzero) digits is 6531840, while the sum is 58.

The spelling of 89447051929 in words is "eighty-nine billion, four hundred forty-seven million, fifty-one thousand, nine hundred twenty-nine".