90849329 has 2 divisors, whose sum is σ = 90849330. Its totient is φ = 90849328.

The previous prime is 90849247. The next prime is 90849371. The reversal of 90849329 is 92394809.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 63234304 + 27615025 = 7952^2 + 5255^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90849329 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 90849329.

It is not a weakly prime, because it can be changed into another prime (90849389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45424664 + 45424665.

It is an arithmetic number, because the mean of its divisors is an integer number (45424665).

Almost surely, 2^90849329 is an apocalyptic number.

It is an amenable number.

90849329 is a deficient number, since it is larger than the sum of its proper divisors (1).

90849329 is an equidigital number, since it uses as much as digits as its factorization.

90849329 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 139968, while the sum is 44.

The square root of 90849329 is about 9531.4914362863. The cubic root of 90849329 is about 449.5457622149.

The spelling of 90849329 in words is "ninety million, eight hundred forty-nine thousand, three hundred twenty-nine".