85730249 has 8 divisors (see below), whose sum is σ = 94489248. Its totient is φ = 77132160.

The previous prime is 85730243. The next prime is 85730273. The reversal of 85730249 is 94203758.

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

It is a cyclic number.

It is not a de Polignac number, because 85730249 - 2⁴ = 85730233 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85730243) 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, 39107 + ... + 41240.

It is an arithmetic number, because the mean of its divisors is an integer number (11811156).

Almost surely, 2^85730249 is an apocalyptic number.

It is an amenable number.

85730249 is a deficient number, since it is larger than the sum of its proper divisors (8758999).

85730249 is a wasteful number, since it uses less digits than its factorization.

85730249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80455.

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 85730249 is about 9259.0630735512. The cubic root of 85730249 is about 440.9385081279.

The spelling of 85730249 in words is "eighty-five million, seven hundred thirty thousand, two hundred forty-nine".