90917438 has 8 divisors (see below), whose sum is σ = 136533600. Its totient is φ = 45406240.

The previous prime is 90917401. The next prime is 90917441. The reversal of 90917438 is 83471909.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 90917395 and 90917404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24038 + ... + 27561.

It is an arithmetic number, because the mean of its divisors is an integer number (17066700).

Almost surely, 2^90917438 is an apocalyptic number.

90917438 is a deficient number, since it is larger than the sum of its proper divisors (45616162).

90917438 is a wasteful number, since it uses less digits than its factorization.

90917438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52482.

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 90917438 is about 9535.0636075487. The cubic root of 90917438 is about 449.6580744153.

The spelling of 90917438 in words is "ninety million, nine hundred seventeen thousand, four hundred thirty-eight".