90438313 has 8 divisors (see below), whose sum is σ = 104774528. Its totient is φ = 76456224.

The previous prime is 90438133. The next prime is 90438343. The reversal of 90438313 is 31383409.

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

It is a cyclic number.

It is not a de Polignac number, because 90438313 - 2⁹ = 90437801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90438343) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87981 + ... + 89002.

It is an arithmetic number, because the mean of its divisors is an integer number (13096816).

Almost surely, 2^90438313 is an apocalyptic number.

It is an amenable number.

90438313 is a deficient number, since it is larger than the sum of its proper divisors (14336215).

90438313 is a wasteful number, since it uses less digits than its factorization.

90438313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177063.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 90438313 is about 9509.9060458030. The cubic root of 90438313 is about 448.8667997736.

The spelling of 90438313 in words is "ninety million, four hundred thirty-eight thousand, three hundred thirteen".