90008029 has 4 divisors (see below), whose sum is σ = 90292284. Its totient is φ = 89723776.

The previous prime is 90008027. The next prime is 90008033. The reversal of 90008029 is 92080009.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 92080009 = 7 ⋅13154287.

It can be written as a sum of positive squares in 2 ways, for example, as 44916804 + 45091225 = 6702^2 + 6715^2 .

It is a cyclic number.

It is not a de Polignac number, because 90008029 - 2¹ = 90008027 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 90007988 and 90008006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90008021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 141652 + ... + 142285.

It is an arithmetic number, because the mean of its divisors is an integer number (22573071).

Almost surely, 2^90008029 is an apocalyptic number.

It is an amenable number.

90008029 is a deficient number, since it is larger than the sum of its proper divisors (284255).

90008029 is a wasteful number, since it uses less digits than its factorization.

90008029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284254.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 90008029 is about 9487.2561365234. The cubic root of 90008029 is about 448.1538006293.

The spelling of 90008029 in words is "ninety million, eight thousand, twenty-nine".