90857953 has 8 divisors (see below), whose sum is σ = 92884968. Its totient is φ = 88842624.

The previous prime is 90857947. The next prime is 90857983. The reversal of 90857953 is 35975809.

It can be written as a sum of positive squares in 4 ways, for example, as 23503104 + 67354849 = 4848^2 + 8207^2 .

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 90857953 - 2¹³ = 90849761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90857933) 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, 13851 + ... + 19327.

It is an arithmetic number, because the mean of its divisors is an integer number (11610621).

Almost surely, 2^90857953 is an apocalyptic number.

It is an amenable number.

90857953 is a deficient number, since it is larger than the sum of its proper divisors (2027015).

90857953 is a wasteful number, since it uses less digits than its factorization.

90857953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5843.

The product of its (nonzero) digits is 340200, while the sum is 46.

The square root of 90857953 is about 9531.9438206485. The cubic root of 90857953 is about 449.5599863522.

The spelling of 90857953 in words is "ninety million, eight hundred fifty-seven thousand, nine hundred fifty-three".