90230029 has 2 divisors, whose sum is σ = 90230030. Its totient is φ = 90230028.

The previous prime is 90230017. The next prime is 90230051. The reversal of 90230029 is 92003209.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 79174404 + 11055625 = 8898^2 + 3325^2 .

It is a cyclic number.

It is not a de Polignac number, because 90230029 - 2⁷ = 90229901 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 90229985 and 90230012.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90230059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45115014 + 45115015.

It is an arithmetic number, because the mean of its divisors is an integer number (45115015).

Almost surely, 2^90230029 is an apocalyptic number.

It is an amenable number.

90230029 is a deficient number, since it is larger than the sum of its proper divisors (1).

90230029 is an equidigital number, since it uses as much as digits as its factorization.

90230029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 972, while the sum is 25.

The square root of 90230029 is about 9498.9488365819. The cubic root of 90230029 is about 448.5219472678.

Adding to 90230029 its product of nonzero digits (972), we get a square (90231001 = 9499²).

The spelling of 90230029 in words is "ninety million, two hundred thirty thousand, twenty-nine".