87494209 has 8 divisors (see below), whose sum is σ = 96521760. Its totient is φ = 78645600.

The previous prime is 87494203. The next prime is 87494243. The reversal of 87494209 is 90249478.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 87494209 - 2⁵ = 87494177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87494203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43707 + ... + 45664.

It is an arithmetic number, because the mean of its divisors is an integer number (12065220).

Almost surely, 2^87494209 is an apocalyptic number.

87494209 is a gapful number since it is divisible by the number (89) formed by its first and last digit.

It is an amenable number.

87494209 is a deficient number, since it is larger than the sum of its proper divisors (9027551).

87494209 is a wasteful number, since it uses less digits than its factorization.

87494209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89471.

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 87494209 is about 9353.8339198427. The cubic root of 87494209 is about 443.9422066513.

The spelling of 87494209 in words is "eighty-seven million, four hundred ninety-four thousand, two hundred nine".