84104649 has 10 divisors (see below), whose sum is σ = 125637930. Its totient is φ = 56069712.

The previous prime is 84104641. The next prime is 84104701. The reversal of 84104649 is 94640148.

It is a happy number.

84104649 is a `hidden beast` number, since 8 + 4 + 1 + 0 + 4 + 649 = 666.

It can be written as a sum of positive squares in only one way, i.e., 58247424 + 25857225 = 7632^2 + 5085^2 .

It is not a de Polignac number, because 84104649 - 2³ = 84104641 is a prime.

It is not an unprimeable number, because it can be changed into a prime (84104641) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 519084 + ... + 519245.

It is an arithmetic number, because the mean of its divisors is an integer number (12563793).

Almost surely, 2^84104649 is an apocalyptic number.

It is an amenable number.

84104649 is a deficient number, since it is larger than the sum of its proper divisors (41533281).

84104649 is a wasteful number, since it uses less digits than its factorization.

84104649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1038341 (or 1038332 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 84104649 is about 9170.8586838965. The cubic root of 84104649 is about 438.1337084749.

The spelling of 84104649 in words is "eighty-four million, one hundred four thousand, six hundred forty-nine".