85402858 has 4 divisors (see below), whose sum is σ = 128104290. Its totient is φ = 42701428.

The previous prime is 85402843. The next prime is 85402897. The reversal of 85402858 is 85820458.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 84327489 + 1075369 = 9183^2 + 1037^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 85402858.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 21350713 + ... + 21350716.

Almost surely, 2^85402858 is an apocalyptic number.

85402858 is a deficient number, since it is larger than the sum of its proper divisors (42701432).

85402858 is a wasteful number, since it uses less digits than its factorization.

85402858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42701431.

The product of its (nonzero) digits is 102400, while the sum is 40.

The square root of 85402858 is about 9241.3666738205. The cubic root of 85402858 is about 440.3764993703.

The spelling of 85402858 in words is "eighty-five million, four hundred two thousand, eight hundred fifty-eight".