87954199 has 4 divisors (see below), whose sum is σ = 88112664. Its totient is φ = 87795736.

The previous prime is 87954197. The next prime is 87954227. The reversal of 87954199 is 99145978.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 87954199 - 2¹ = 87954197 is a prime.

It is a super-2 number, since 2×87954199² = 15471882243463202, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87954193) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78397 + ... + 79510.

It is an arithmetic number, because the mean of its divisors is an integer number (22028166).

Almost surely, 2^87954199 is an apocalyptic number.

87954199 is a deficient number, since it is larger than the sum of its proper divisors (158465).

87954199 is a wasteful number, since it uses less digits than its factorization.

87954199 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158464.

The product of its digits is 816480, while the sum is 52.

The square root of 87954199 is about 9378.3900004212. The cubic root of 87954199 is about 444.7188376677.

The spelling of 87954199 in words is "eighty-seven million, nine hundred fifty-four thousand, one hundred ninety-nine".