90550829 has 2 divisors, whose sum is σ = 90550830. Its totient is φ = 90550828.

The previous prime is 90550807. The next prime is 90550883. The reversal of 90550829 is 92805509.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 64561225 + 25989604 = 8035^2 + 5098^2 .

It is a cyclic number.

It is not a de Polignac number, because 90550829 - 2²⁰ = 89502253 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 90550792 and 90550801.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90559829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45275414 + 45275415.

It is an arithmetic number, because the mean of its divisors is an integer number (45275415).

Almost surely, 2^90550829 is an apocalyptic number.

It is an amenable number.

90550829 is a deficient number, since it is larger than the sum of its proper divisors (1).

90550829 is an equidigital number, since it uses as much as digits as its factorization.

90550829 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 32400, while the sum is 38.

The square root of 90550829 is about 9515.8199331429. The cubic root of 90550829 is about 449.0528704960.

The spelling of 90550829 in words is "ninety million, five hundred fifty thousand, eight hundred twenty-nine".