90380045 has 16 divisors (see below), whose sum is σ = 124312320. Its totient is φ = 61793664.

The previous prime is 90380039. The next prime is 90380047. The reversal of 90380045 is 54008309.

It is a cyclic number.

It is not a de Polignac number, because 90380045 - 2⁶ = 90379981 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90380047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8969 + ... + 16161.

It is an arithmetic number, because the mean of its divisors is an integer number (7769520).

Almost surely, 2^90380045 is an apocalyptic number.

It is an amenable number.

90380045 is a deficient number, since it is larger than the sum of its proper divisors (33932275).

90380045 is a wasteful number, since it uses less digits than its factorization.

90380045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7564.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 90380045 is about 9506.8420098369. The cubic root of 90380045 is about 448.7703797615.

The spelling of 90380045 in words is "ninety million, three hundred eighty thousand, forty-five".