858408934 has 4 divisors (see below), whose sum is σ = 1287613404. Its totient is φ = 429204466.

The previous prime is 858408913. The next prime is 858408937. The reversal of 858408934 is 439804858.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (858408937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214602232 + ... + 214602235.

It is an arithmetic number, because the mean of its divisors is an integer number (321903351).

Almost surely, 2^858408934 is an apocalyptic number.

858408934 is a deficient number, since it is larger than the sum of its proper divisors (429204470).

858408934 is a wasteful number, since it uses less digits than its factorization.

858408934 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 429204469.

The product of its (nonzero) digits is 1105920, while the sum is 49.

The square root of 858408934 is about 29298.6165885012. The cubic root of 858408934 is about 950.3817243439.

The spelling of 858408934 in words is "eight hundred fifty-eight million, four hundred eight thousand, nine hundred thirty-four".