90208147 has 2 divisors, whose sum is σ = 90208148. Its totient is φ = 90208146.

The previous prime is 90208117. The next prime is 90208177. The reversal of 90208147 is 74180209.

It is a balanced prime because it is at equal distance from previous prime (90208117) and next prime (90208177).

It is a cyclic number.

It is not a de Polignac number, because 90208147 - 2¹¹ = 90206099 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (90208117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45104073 + 45104074.

It is an arithmetic number, because the mean of its divisors is an integer number (45104074).

Almost surely, 2^90208147 is an apocalyptic number.

90208147 is a deficient number, since it is larger than the sum of its proper divisors (1).

90208147 is an equidigital number, since it uses as much as digits as its factorization.

90208147 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 90208147 is about 9497.7969550838. The cubic root of 90208147 is about 448.4856867942.

The spelling of 90208147 in words is "ninety million, two hundred eight thousand, one hundred forty-seven".