87477794 has 4 divisors (see below), whose sum is σ = 131216694. Its totient is φ = 43738896.

The previous prime is 87477791. The next prime is 87477799. The reversal of 87477794 is 49777478.

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

It can be written as a sum of positive squares in only one way, i.e., 83046769 + 4431025 = 9113^2 + 2105^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (87477791) 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 as a sum of consecutive naturals, namely, 21869447 + ... + 21869450.

Almost surely, 2^87477794 is an apocalyptic number.

87477794 is a deficient number, since it is larger than the sum of its proper divisors (43738900).

87477794 is a wasteful number, since it uses less digits than its factorization.

87477794 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43738899.

The product of its digits is 2765952, while the sum is 53.

The square root of 87477794 is about 9352.9564309901. The cubic root of 87477794 is about 443.9144418914.

The spelling of 87477794 in words is "eighty-seven million, four hundred seventy-seven thousand, seven hundred ninety-four".