85812949 has 8 divisors (see below), whose sum is σ = 90586880. Its totient is φ = 81289980.

The previous prime is 85812919. The next prime is 85812967. The reversal of 85812949 is 94921858.

It is not a de Polignac number, because 85812949 - 2⁵ = 85812917 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 85812899 and 85812908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85812919) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 604 + ... + 13114.

It is an arithmetic number, because the mean of its divisors is an integer number (11323360).

Almost surely, 2^85812949 is an apocalyptic number.

It is an amenable number.

85812949 is a deficient number, since it is larger than the sum of its proper divisors (4773931).

85812949 is an equidigital number, since it uses as much as digits as its factorization.

85812949 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12568 (or 12530 counting only the distinct ones).

The product of its digits is 207360, while the sum is 46.

The square root of 85812949 is about 9263.5278916836. The cubic root of 85812949 is about 441.0802468792.

The spelling of 85812949 in words is "eighty-five million, eight hundred twelve thousand, nine hundred forty-nine".