87194497 has 16 divisors (see below), whose sum is σ = 96815488. Its totient is φ = 78019200.

The previous prime is 87194491. The next prime is 87194519. The reversal of 87194497 is 79449178.

It is a de Polignac number, because none of the positive numbers 2^k-87194497 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 87194497.

It is not an unprimeable number, because it can be changed into a prime (87194491) 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 15 ways as a sum of consecutive naturals, for example, 83893 + ... + 84925.

It is an arithmetic number, because the mean of its divisors is an integer number (6050968).

Almost surely, 2^87194497 is an apocalyptic number.

It is an amenable number.

87194497 is a deficient number, since it is larger than the sum of its proper divisors (9620991).

87194497 is a wasteful number, since it uses less digits than its factorization.

87194497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1240.

The product of its digits is 508032, while the sum is 49.

The square root of 87194497 is about 9337.7993660177. The cubic root of 87194497 is about 443.4347177380.

The spelling of 87194497 in words is "eighty-seven million, one hundred ninety-four thousand, four hundred ninety-seven".