87709399 has 8 divisors (see below), whose sum is σ = 89369280. Its totient is φ = 86056800.

The previous prime is 87709387. The next prime is 87709423. The reversal of 87709399 is 99390778.

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

It is a cyclic number.

It is not a de Polignac number, because 87709399 - 2¹⁷ = 87578327 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 (87709319) 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, 26562 + ... + 29680.

It is an arithmetic number, because the mean of its divisors is an integer number (11171160).

Almost surely, 2^87709399 is an apocalyptic number.

87709399 is a deficient number, since it is larger than the sum of its proper divisors (1659881).

87709399 is a wasteful number, since it uses less digits than its factorization.

87709399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3641.

The product of its (nonzero) digits is 857304, while the sum is 52.

The square root of 87709399 is about 9365.3296258060. The cubic root of 87709399 is about 444.3058639030.

The spelling of 87709399 in words is "eighty-seven million, seven hundred nine thousand, three hundred ninety-nine".