85779444 has 12 divisors (see below), whose sum is σ = 200152064. Its totient is φ = 28593144.

The previous prime is 85779427. The next prime is 85779461. The reversal of 85779444 is 44497758.

It is an interprime number because it is at equal distance from previous prime (85779427) and next prime (85779461).

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×85779444² = 14716226025898272, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 85779393 and 85779402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3574132 + ... + 3574155.

Almost surely, 2^85779444 is an apocalyptic number.

It is an amenable number.

85779444 is an abundant number, since it is smaller than the sum of its proper divisors (114372620).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85779444 is a wasteful number, since it uses less digits than its factorization.

85779444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7148294 (or 7148292 counting only the distinct ones).

The product of its digits is 1128960, while the sum is 48.

The square root of 85779444 is about 9261.7192788380. The cubic root of 85779444 is about 441.0228339533.

The spelling of 85779444 in words is "eighty-five million, seven hundred seventy-nine thousand, four hundred forty-four".