90105307 has 2 divisors, whose sum is σ = 90105308. Its totient is φ = 90105306.

The previous prime is 90105299. The next prime is 90105347. The reversal of 90105307 is 70350109.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 90105307 - 2³ = 90105299 is a prime.

It is equal to p_5222743 and since 90105307 and 5222743 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (90105347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45052653 + 45052654.

It is an arithmetic number, because the mean of its divisors is an integer number (45052654).

Almost surely, 2^90105307 is an apocalyptic number.

90105307 is a deficient number, since it is larger than the sum of its proper divisors (1).

90105307 is an equidigital number, since it uses as much as digits as its factorization.

90105307 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 945, while the sum is 25.

The square root of 90105307 is about 9492.3815241487. The cubic root of 90105307 is about 448.3151929323.

The spelling of 90105307 in words is "ninety million, one hundred five thousand, three hundred seven".