993190087 has 2 divisors, whose sum is σ = 993190088. Its totient is φ = 993190086.

The previous prime is 993190067. The next prime is 993190141. The reversal of 993190087 is 780091399.

It is a weak prime.

It is an emirp because it is prime and its reverse (780091399) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 993190087 - 2⁷ = 993189959 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (993190067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 496595043 + 496595044.

It is an arithmetic number, because the mean of its divisors is an integer number (496595044).

Almost surely, 2^993190087 is an apocalyptic number.

993190087 is a deficient number, since it is larger than the sum of its proper divisors (1).

993190087 is an equidigital number, since it uses as much as digits as its factorization.

993190087 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 122472, while the sum is 46.

The square root of 993190087 is about 31514.9184831565. The cubic root of 993190087 is about 997.7248566483.

The spelling of 993190087 in words is "nine hundred ninety-three million, one hundred ninety thousand, eighty-seven".