85001749 has 4 divisors (see below), whose sum is σ = 97144864. Its totient is φ = 72858636.

The previous prime is 85001743. The next prime is 85001759. The reversal of 85001749 is 94710058.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 85001749 - 2²⁵ = 51447317 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85001743) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6071547 + ... + 6071560.

It is an arithmetic number, because the mean of its divisors is an integer number (24286216).

Almost surely, 2^85001749 is an apocalyptic number.

It is an amenable number.

85001749 is a deficient number, since it is larger than the sum of its proper divisors (12143115).

85001749 is a wasteful number, since it uses less digits than its factorization.

85001749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12143114.

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 85001749 is about 9219.6393096476. The cubic root of 85001749 is about 439.6859829030.

The spelling of 85001749 in words is "eighty-five million, one thousand, seven hundred forty-nine".