90647493 has 8 divisors (see below), whose sum is σ = 121406208. Its totient is φ = 60160224.

The previous prime is 90647477. The next prime is 90647539. The reversal of 90647493 is 39474609.

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

It is not a de Polignac number, because 90647493 - 2⁴ = 90647477 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90647593) 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, 67080 + ... + 68417.

It is an arithmetic number, because the mean of its divisors is an integer number (15175776).

Almost surely, 2^90647493 is an apocalyptic number.

It is an amenable number.

90647493 is a deficient number, since it is larger than the sum of its proper divisors (30758715).

90647493 is a wasteful number, since it uses less digits than its factorization.

90647493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135723.

The product of its (nonzero) digits is 163296, while the sum is 42.

The square root of 90647493 is about 9520.8976992718. The cubic root of 90647493 is about 449.2126032870.

The spelling of 90647493 in words is "ninety million, six hundred forty-seven thousand, four hundred ninety-three".