90934505 has 4 divisors (see below), whose sum is σ = 109121412. Its totient is φ = 72747600.

The previous prime is 90934499. The next prime is 90934507. The reversal of 90934505 is 50543909.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50543909 = 13 ⋅3887993.

It can be written as a sum of positive squares in 2 ways, for example, as 9357481 + 81577024 = 3059^2 + 9032^2 .

It is not a de Polignac number, because 90934505 - 2⁴ = 90934489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90934507) 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, 9093446 + ... + 9093455.

It is an arithmetic number, because the mean of its divisors is an integer number (27280353).

Almost surely, 2^90934505 is an apocalyptic number.

It is an amenable number.

90934505 is a deficient number, since it is larger than the sum of its proper divisors (18186907).

90934505 is a wasteful number, since it uses less digits than its factorization.

90934505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18186906.

The product of its (nonzero) digits is 24300, while the sum is 35.

The square root of 90934505 is about 9535.9585254971. The cubic root of 90934505 is about 449.6862092241.

The spelling of 90934505 in words is "ninety million, nine hundred thirty-four thousand, five hundred five".