85439949 has 8 divisors (see below), whose sum is σ = 130194240. Its totient is φ = 48822816.

The previous prime is 85439933. The next prime is 85439969. The reversal of 85439949 is 94993458.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 85439949 - 2⁴ = 85439933 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85439929) 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, 2034264 + ... + 2034305.

It is an arithmetic number, because the mean of its divisors is an integer number (16274280).

Almost surely, 2^85439949 is an apocalyptic number.

It is an amenable number.

85439949 is a deficient number, since it is larger than the sum of its proper divisors (44754291).

85439949 is a wasteful number, since it uses less digits than its factorization.

85439949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4068579.

The product of its digits is 1399680, while the sum is 51.

The square root of 85439949 is about 9243.3732479004. The cubic root of 85439949 is about 440.4402429071.

The spelling of 85439949 in words is "eighty-five million, four hundred thirty-nine thousand, nine hundred forty-nine".