90389030 has 16 divisors (see below), whose sum is σ = 165129840. Its totient is φ = 35615712.

The previous prime is 90388997. The next prime is 90389071. The reversal of 90389030 is 3098309.

90389030 = T₁₆₀₉ + T₁₆₁₀ + ... + T₁₆₇₅.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 66785 + ... + 68124.

It is an arithmetic number, because the mean of its divisors is an integer number (10320615).

Almost surely, 2^90389030 is an apocalyptic number.

90389030 is a deficient number, since it is larger than the sum of its proper divisors (74740810).

90389030 is a wasteful number, since it uses less digits than its factorization.

90389030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134983.

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 90389030 is about 9507.3145524906. The cubic root of 90389030 is about 448.7852505524.

The spelling of 90389030 in words is "ninety million, three hundred eighty-nine thousand, thirty".