87199829 has 4 divisors (see below), whose sum is σ = 89227776. Its totient is φ = 85171884.

The previous prime is 87199823. The next prime is 87199837. The reversal of 87199829 is 92899178.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 87199829 - 2⁴ = 87199813 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 (87199823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1013909 + ... + 1013994.

It is an arithmetic number, because the mean of its divisors is an integer number (22306944).

Almost surely, 2^87199829 is an apocalyptic number.

It is an amenable number.

87199829 is a deficient number, since it is larger than the sum of its proper divisors (2027947).

87199829 is a wasteful number, since it uses less digits than its factorization.

87199829 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2027946.

The product of its digits is 653184, while the sum is 53.

The square root of 87199829 is about 9338.0848678945. The cubic root of 87199829 is about 443.4437563272.

The spelling of 87199829 in words is "eighty-seven million, one hundred ninety-nine thousand, eight hundred twenty-nine".