90548279 has 6 divisors (see below), whose sum is σ = 90983880. Its totient is φ = 90114720.

The previous prime is 90548267. The next prime is 90548291. The reversal of 90548279 is 97284509.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (90548267) and next prime (90548291).

It is a de Polignac number, because none of the positive numbers 2^k-90548279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90548209) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 57302 + ... + 58860.

It is an arithmetic number, because the mean of its divisors is an integer number (15163980).

Almost surely, 2^90548279 is an apocalyptic number.

90548279 is a deficient number, since it is larger than the sum of its proper divisors (435601).

90548279 is an equidigital number, since it uses as much as digits as its factorization.

90548279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2041 (or 1800 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 44.

The square root of 90548279 is about 9515.6859447966. The cubic root of 90548279 is about 449.0486552003.

The spelling of 90548279 in words is "ninety million, five hundred forty-eight thousand, two hundred seventy-nine".