90306349 has 16 divisors (see below), whose sum is σ = 108011520. Its totient is φ = 73822320.

The previous prime is 90306347. The next prime is 90306443. The reversal of 90306349 is 94360309.

It is a cyclic number.

It is not a de Polignac number, because 90306349 - 2¹ = 90306347 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90306341) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76534 + ... + 77704.

It is an arithmetic number, because the mean of its divisors is an integer number (6750720).

Almost surely, 2^90306349 is an apocalyptic number.

It is an amenable number.

90306349 is a deficient number, since it is larger than the sum of its proper divisors (17705171).

90306349 is a wasteful number, since it uses less digits than its factorization.

90306349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1680.

The product of its (nonzero) digits is 17496, while the sum is 34.

The square root of 90306349 is about 9502.9652740605. The cubic root of 90306349 is about 448.6483706200.

The spelling of 90306349 in words is "ninety million, three hundred six thousand, three hundred forty-nine".