87997394 has 8 divisors (see below), whose sum is σ = 133164540. Its totient is φ = 43609216.

The previous prime is 87997373. The next prime is 87997409. The reversal of 87997394 is 49379978.

It can be written as a sum of positive squares in 2 ways, for example, as 83046769 + 4950625 = 9113^2 + 2225^2 .

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

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 194459 + ... + 194910.

Almost surely, 2^87997394 is an apocalyptic number.

87997394 is a deficient number, since it is larger than the sum of its proper divisors (45167146).

87997394 is a wasteful number, since it uses less digits than its factorization.

87997394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 389484.

The product of its digits is 3429216, while the sum is 56.

The square root of 87997394 is about 9380.6926183518. The cubic root of 87997394 is about 444.7916273947.

The spelling of 87997394 in words is "eighty-seven million, nine hundred ninety-seven thousand, three hundred ninety-four".