858109373 has 6 divisors (see below), whose sum is σ = 943211262. Its totient is φ = 780099320.

The previous prime is 858109319. The next prime is 858109423. The reversal of 858109373 is 373901858.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 706868569 + 151240804 = 26587^2 + 12298^2 .

It is not a de Polignac number, because 858109373 - 2⁸ = 858109117 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 (858109573) 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, 3545786 + ... + 3546027.

It is an arithmetic number, because the mean of its divisors is an integer number (157201877).

Almost surely, 2^858109373 is an apocalyptic number.

It is an amenable number.

858109373 is a deficient number, since it is larger than the sum of its proper divisors (85101889).

858109373 is a wasteful number, since it uses less digits than its factorization.

858109373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7091835 (or 7091824 counting only the distinct ones).

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

The square root of 858109373 is about 29293.5039385868. The cubic root of 858109373 is about 950.2711591606.

The spelling of 858109373 in words is "eight hundred fifty-eight million, one hundred nine thousand, three hundred seventy-three".