90339617 has 4 divisors (see below), whose sum is σ = 91577220. Its totient is φ = 89102016.

The previous prime is 90339589. The next prime is 90339643. The reversal of 90339617 is 71693309.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 71693309 = 37 ⋅1937657.

It can be written as a sum of positive squares in 2 ways, for example, as 16654561 + 73685056 = 4081^2 + 8584^2 .

It is a cyclic number.

It is not a de Polignac number, because 90339617 - 2¹² = 90335521 is a prime.

It is a super-2 number, since 2×90339617² = 16322492799413378, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90339677) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 618692 + ... + 618837.

It is an arithmetic number, because the mean of its divisors is an integer number (22894305).

Almost surely, 2^90339617 is an apocalyptic number.

It is an amenable number.

90339617 is a deficient number, since it is larger than the sum of its proper divisors (1237603).

90339617 is a wasteful number, since it uses less digits than its factorization.

90339617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1237602.

The product of its (nonzero) digits is 30618, while the sum is 38.

The square root of 90339617 is about 9504.7155138910. The cubic root of 90339617 is about 448.7034564536.

The spelling of 90339617 in words is "ninety million, three hundred thirty-nine thousand, six hundred seventeen".