85709450 has 12 divisors (see below), whose sum is σ = 159419670. Its totient is φ = 34283760.

The previous prime is 85709447. The next prime is 85709479. The reversal of 85709450 is 5490758.

It can be written as a sum of positive squares in 3 ways, for example, as 72914521 + 12794929 = 8539^2 + 3577^2 .

It is a super-2 number, since 2×85709450² = 14692219638605000, which contains 22 as substring.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

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 in 5 ways as a sum of consecutive naturals, for example, 857045 + ... + 857144.

Almost surely, 2^85709450 is an apocalyptic number.

85709450 is a deficient number, since it is larger than the sum of its proper divisors (73710220).

85709450 is a wasteful number, since it uses less digits than its factorization.

85709450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1714201 (or 1714196 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 38.

The square root of 85709450 is about 9257.9398356222. The cubic root of 85709450 is about 440.9028465735.

The spelling of 85709450 in words is "eighty-five million, seven hundred nine thousand, four hundred fifty".