87878794 has 4 divisors (see below), whose sum is σ = 131818194. Its totient is φ = 43939396.

The previous prime is 87878783. The next prime is 87878807. The reversal of 87878794 is 49787878.

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., 53831569 + 34047225 = 7337^2 + 5835^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21969697 + ... + 21969700.

Almost surely, 2^87878794 is an apocalyptic number.

87878794 is a deficient number, since it is larger than the sum of its proper divisors (43939400).

87878794 is a wasteful number, since it uses less digits than its factorization.

87878794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43939399.

The product of its digits is 6322176, while the sum is 58.

The square root of 87878794 is about 9374.3689920975. The cubic root of 87878794 is about 444.5917123683.

The spelling of 87878794 in words is "eighty-seven million, eight hundred seventy-eight thousand, seven hundred ninety-four".