858421366 has 8 divisors (see below), whose sum is σ = 1404689544. Its totient is φ = 390191520.

The previous prime is 858421363. The next prime is 858421367. The reversal of 858421366 is 663124858.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (858421363) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19509555 + ... + 19509598.

It is an arithmetic number, because the mean of its divisors is an integer number (175586193).

Almost surely, 2^858421366 is an apocalyptic number.

858421366 is a deficient number, since it is larger than the sum of its proper divisors (546268178).

858421366 is a wasteful number, since it uses less digits than its factorization.

858421366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39019166.

The product of its digits is 276480, while the sum is 43.

The square root of 858421366 is about 29298.8287479210. The cubic root of 858421366 is about 950.3863123237.

It can be divided in two parts, 858 and 421366, that added together give a palindrome (422224).

The spelling of 858421366 in words is "eight hundred fifty-eight million, four hundred twenty-one thousand, three hundred sixty-six".