91648479 has 32 divisors (see below), whose sum is σ = 140495040. Its totient is φ = 52641792.

The previous prime is 91648477. The next prime is 91648481. The reversal of 91648479 is 97484619.

It is an interprime number because it is at equal distance from previous prime (91648477) and next prime (91648481).

It is not a de Polignac number, because 91648479 - 2¹ = 91648477 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91648477) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 90327 + ... + 91335.

It is an arithmetic number, because the mean of its divisors is an integer number (4390470).

Almost surely, 2^91648479 is an apocalyptic number.

91648479 is a deficient number, since it is larger than the sum of its proper divisors (48846561).

91648479 is a wasteful number, since it uses less digits than its factorization.

91648479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1179.

The product of its digits is 435456, while the sum is 48.

The square root of 91648479 is about 9573.3212105309. The cubic root of 91648479 is about 450.8600490370.

The spelling of 91648479 in words is "ninety-one million, six hundred forty-eight thousand, four hundred seventy-nine".