858490001 has 8 divisors (see below), whose sum is σ = 878874024. Its totient is φ = 838339200.

The previous prime is 858489979. The next prime is 858490033. The reversal of 858490001 is 100094858.

It is a Cunningham number, because it is equal to 29300²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 317694976 + 540795025 = 17824^2 + 23255^2 .

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 858490001 - 2⁶ = 858489937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (858490051) 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, 50846 + ... + 65591.

It is an arithmetic number, because the mean of its divisors is an integer number (109859253).

Almost surely, 2^858490001 is an apocalyptic number.

It is an amenable number.

858490001 is a deficient number, since it is larger than the sum of its proper divisors (20384023).

858490001 is a wasteful number, since it uses less digits than its factorization.

858490001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116611.

The product of its (nonzero) digits is 11520, while the sum is 35.

The square root of 858490001 is about 29300.0000170648. Note that the first 4 decimals coincide. The cubic root of 858490001 is about 950.4116409982.

The spelling of 858490001 in words is "eight hundred fifty-eight million, four hundred ninety thousand, one".