90029 has 4 divisors (see below), whose sum is σ = 90684. Its totient is φ = 89376.

The previous prime is 90023. The next prime is 90031. The reversal of 90029 is 92009.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 84100 + 5929 = 290^2 + 77^2 .

It is a cyclic number.

It is not a de Polignac number, because 90029 - 2¹² = 85933 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32 + ... + 425.

It is an arithmetic number, because the mean of its divisors is an integer number (22671).

2⁹⁰⁰²⁹ is an apocalyptic number.

It is an amenable number.

90029 is a deficient number, since it is larger than the sum of its proper divisors (655).

90029 is a wasteful number, since it uses less digits than its factorization.

90029 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 654.

The product of its (nonzero) digits is 162, while the sum is 20.

The square root of 90029 is about 300.0483294404. The cubic root of 90029 is about 44.8188603093.

Subtracting from 90029 its sum of digits (20), we obtain a palindrome (90009).

It can be divided in two parts, 9002 and 9, that multiplied together give a palindrome (81018).

The spelling of 90029 in words is "ninety thousand, twenty-nine".