87972099 has 8 divisors (see below), whose sum is σ = 117341952. Its totient is φ = 58625160.

The previous prime is 87972091. The next prime is 87972107. The reversal of 87972099 is 99027978.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (87972091) and next prime (87972107).

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

It is not a de Polignac number, because 87972099 - 2³ = 87972091 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87972091) 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 7 ways as a sum of consecutive naturals, for example, 7794 + ... + 15384.

It is an arithmetic number, because the mean of its divisors is an integer number (14667744).

Almost surely, 2^87972099 is an apocalyptic number.

87972099 is a deficient number, since it is larger than the sum of its proper divisors (29369853).

87972099 is a wasteful number, since it uses less digits than its factorization.

87972099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11457.

The product of its (nonzero) digits is 571536, while the sum is 51.

The square root of 87972099 is about 9379.3442734554. The cubic root of 87972099 is about 444.7490046081.

The spelling of 87972099 in words is "eighty-seven million, nine hundred seventy-two thousand, ninety-nine".