85022749 has 4 divisors (see below), whose sum is σ = 97168864. Its totient is φ = 72876636.

The previous prime is 85022737. The next prime is 85022761. The reversal of 85022749 is 94722058.

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 an interprime number because it is at equal distance from previous prime (85022737) and next prime (85022761).

It is not a de Polignac number, because 85022749 - 2¹⁹ = 84498461 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 (85022449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6073047 + ... + 6073060.

It is an arithmetic number, because the mean of its divisors is an integer number (24292216).

Almost surely, 2^85022749 is an apocalyptic number.

It is an amenable number.

85022749 is a deficient number, since it is larger than the sum of its proper divisors (12146115).

85022749 is a wasteful number, since it uses less digits than its factorization.

85022749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12146114.

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 85022749 is about 9220.7781125022. The cubic root of 85022749 is about 439.7221886104.

The spelling of 85022749 in words is "eighty-five million, twenty-two thousand, seven hundred forty-nine".