84734109 has 6 divisors (see below), whose sum is σ = 122393726. Its totient is φ = 56489400.

The previous prime is 84734101. The next prime is 84734113. The reversal of 84734109 is 90143748.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 55086084 + 29648025 = 7422^2 + 5445^2 .

It is not a de Polignac number, because 84734109 - 2³ = 84734101 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 (84734101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4707442 + ... + 4707459.

Almost surely, 2^84734109 is an apocalyptic number.

It is an amenable number.

84734109 is a deficient number, since it is larger than the sum of its proper divisors (37659617).

84734109 is a wasteful number, since it uses less digits than its factorization.

84734109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9414907 (or 9414904 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 84734109 is about 9205.1131986521. The cubic root of 84734109 is about 439.2240266002.

The spelling of 84734109 in words is "eighty-four million, seven hundred thirty-four thousand, one hundred nine".