90438308 has 6 divisors (see below), whose sum is σ = 158267046. Its totient is φ = 45219152.

The previous prime is 90438133. The next prime is 90438343. The reversal of 90438308 is 80383409.

It can be written as a sum of positive squares in only one way, i.e., 89908324 + 529984 = 9482^2 + 728^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11304785 + ... + 11304792.

It is an arithmetic number, because the mean of its divisors is an integer number (26377841).

Almost surely, 2^90438308 is an apocalyptic number.

It is an amenable number.

90438308 is a deficient number, since it is larger than the sum of its proper divisors (67828738).

90438308 is a wasteful number, since it uses less digits than its factorization.

90438308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22609581 (or 22609579 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 90438308 is about 9509.9057829192. The cubic root of 90438308 is about 448.8667915016.

The spelling of 90438308 in words is "ninety million, four hundred thirty-eight thousand, three hundred eight".