91470649 has 8 divisors (see below), whose sum is σ = 92933568. Its totient is φ = 90012720.

The previous prime is 91470647. The next prime is 91470671. The reversal of 91470649 is 94607419.

It is a happy number.

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 91470649 - 2¹ = 91470647 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91470641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55059 + ... + 56695.

It is an arithmetic number, because the mean of its divisors is an integer number (11616696).

Almost surely, 2^91470649 is an apocalyptic number.

It is an amenable number.

91470649 is a deficient number, since it is larger than the sum of its proper divisors (1462919).

91470649 is a wasteful number, since it uses less digits than its factorization.

91470649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2495.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 91470649 is about 9564.0289104540. The cubic root of 91470649 is about 450.5682516676.

The spelling of 91470649 in words is "ninety-one million, four hundred seventy thousand, six hundred forty-nine".