85413844 has 6 divisors (see below), whose sum is σ = 149474234. Its totient is φ = 42706920.

The previous prime is 85413841. The next prime is 85413857. The reversal of 85413844 is 44831458.

It can be written as a sum of positive squares in only one way, i.e., 71064900 + 14348944 = 8430^2 + 3788^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85413841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10676727 + ... + 10676734.

Almost surely, 2^85413844 is an apocalyptic number.

It is an amenable number.

85413844 is a deficient number, since it is larger than the sum of its proper divisors (64060390).

85413844 is a wasteful number, since it uses less digits than its factorization.

85413844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21353465 (or 21353463 counting only the distinct ones).

The product of its digits is 61440, while the sum is 37.

The square root of 85413844 is about 9241.9610473103. The cubic root of 85413844 is about 440.3953815206.

The spelling of 85413844 in words is "eighty-five million, four hundred thirteen thousand, eight hundred forty-four".