86994609 has 32 divisors (see below), whose sum is σ = 128177280. Its totient is φ = 52468416.

The previous prime is 86994599. The next prime is 86994613. The reversal of 86994609 is 90649968.

It is not a de Polignac number, because 86994609 - 2¹¹ = 86992561 is a prime.

It is a super-4 number, since 4×86994609⁴ (a number of 33 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86994629) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 441499 + ... + 441695.

It is an arithmetic number, because the mean of its divisors is an integer number (4005540).

Almost surely, 2^86994609 is an apocalyptic number.

It is an amenable number.

86994609 is a deficient number, since it is larger than the sum of its proper divisors (41182671).

86994609 is a wasteful number, since it uses less digits than its factorization.

86994609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306 (or 280 counting only the distinct ones).

The product of its (nonzero) digits is 839808, while the sum is 51.

The square root of 86994609 is about 9327.0900606781. The cubic root of 86994609 is about 443.0956095751.

The spelling of 86994609 in words is "eighty-six million, nine hundred ninety-four thousand, six hundred nine".