90438415 has 16 divisors (see below), whose sum is σ = 116012736. Its totient is φ = 67513600.

The previous prime is 90438401. The next prime is 90438421. The reversal of 90438415 is 51483409.

It is not a de Polignac number, because 90438415 - 2⁹ = 90437903 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4876 + ... + 14305.

It is an arithmetic number, because the mean of its divisors is an integer number (7250796).

Almost surely, 2^90438415 is an apocalyptic number.

90438415 is a deficient number, since it is larger than the sum of its proper divisors (25574321).

90438415 is a wasteful number, since it uses less digits than its factorization.

90438415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19250.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 90438415 is about 9509.9114086305. The cubic root of 90438415 is about 448.8669685236.

The spelling of 90438415 in words is "ninety million, four hundred thirty-eight thousand, four hundred fifteen".