89999429 has 18 divisors (see below), whose sum is σ = 100417590. Its totient is φ = 80623296.

The previous prime is 89999369. The next prime is 89999453. The reversal of 89999429 is 92499998.

89999429 = 1848² + 1849² + ... + 1873².

It can be written as a sum of positive squares in 9 ways, for example, as 18258529 + 71740900 = 4273^2 + 8470^2 .

It is not a de Polignac number, because 89999429 - 2¹² = 89995333 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89990429) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 231167 + ... + 231555.

It is an arithmetic number, because the mean of its divisors is an integer number (5578755).

Almost surely, 2^89999429 is an apocalyptic number.

It is an amenable number.

89999429 is a deficient number, since it is larger than the sum of its proper divisors (10418161).

89999429 is a wasteful number, since it uses less digits than its factorization.

89999429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 489 (or 439 counting only the distinct ones).

The product of its digits is 3779136, while the sum is 59.

The square root of 89999429 is about 9486.8028861150. The cubic root of 89999429 is about 448.1395269196.

The spelling of 89999429 in words is "eighty-nine million, nine hundred ninety-nine thousand, four hundred twenty-nine".