90541879 has 2 divisors, whose sum is σ = 90541880. Its totient is φ = 90541878.

The previous prime is 90541877. The next prime is 90541883. The reversal of 90541879 is 97814509.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 90541879 - 2¹ = 90541877 is a prime.

Together with 90541877, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (90541877) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 45270939 + 45270940.

It is an arithmetic number, because the mean of its divisors is an integer number (45270940).

Almost surely, 2^90541879 is an apocalyptic number.

90541879 is a deficient number, since it is larger than the sum of its proper divisors (1).

90541879 is an equidigital number, since it uses as much as digits as its factorization.

90541879 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90720, while the sum is 43.

The square root of 90541879 is about 9515.3496520096. The cubic root of 90541879 is about 449.0380752859.

The spelling of 90541879 in words is "ninety million, five hundred forty-one thousand, eight hundred seventy-nine".