90279335977 has 8 divisors (see below), whose sum is σ = 90751379400. Its totient is φ = 89807432064.

The previous prime is 90279335957. The next prime is 90279335989. The reversal of 90279335977 is 77953397209.

It can be written as a sum of positive squares in 4 ways, for example, as 42256558096 + 48022777881 = 205564^2 + 219141^2 .

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 90279335977 - 2⁷ = 90279335849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90279335957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1420599 + ... + 1482787.

It is an arithmetic number, because the mean of its divisors is an integer number (11343922425).

Almost surely, 2^90279335977 is an apocalyptic number.

It is an amenable number.

90279335977 is a deficient number, since it is larger than the sum of its proper divisors (472043423).

90279335977 is a wasteful number, since it uses less digits than its factorization.

90279335977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69755.

The product of its (nonzero) digits is 22504230, while the sum is 61.

The spelling of 90279335977 in words is "ninety billion, two hundred seventy-nine million, three hundred thirty-five thousand, nine hundred seventy-seven".