84757049 has 12 divisors (see below), whose sum is σ = 92203452. Its totient is φ = 77875200.

The previous prime is 84757039. The next prime is 84757061. The reversal of 84757049 is 94075748.

84757049 = 1793² + 1794² + ... + 1818².

It can be written as a sum of positive squares in 6 ways, for example, as 8369449 + 76387600 = 2893^2 + 8740^2 .

It is not a de Polignac number, because 84757049 - 2²⁴ = 67979833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (84757039) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39689 + ... + 41769.

It is an arithmetic number, because the mean of its divisors is an integer number (7683621).

Almost surely, 2^84757049 is an apocalyptic number.

It is an amenable number.

84757049 is a deficient number, since it is larger than the sum of its proper divisors (7446403).

84757049 is a wasteful number, since it uses less digits than its factorization.

84757049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2348 (or 2335 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 44.

The square root of 84757049 is about 9206.3591609278. The cubic root of 84757049 is about 439.2636599512.

The spelling of 84757049 in words is "eighty-four million, seven hundred fifty-seven thousand, forty-nine".