87873419 has 2 divisors, whose sum is σ = 87873420. Its totient is φ = 87873418.

The previous prime is 87873407. The next prime is 87873421. The reversal of 87873419 is 91437878.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87873419 is a prime.

It is a super-2 number, since 2×87873419² = 15443475533499122, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 87873421, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (87873439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43936709 + 43936710.

It is an arithmetic number, because the mean of its divisors is an integer number (43936710).

Almost surely, 2^87873419 is an apocalyptic number.

87873419 is a deficient number, since it is larger than the sum of its proper divisors (1).

87873419 is an equidigital number, since it uses as much as digits as its factorization.

87873419 is an evil number, because the sum of its binary digits is even.

The product of its digits is 338688, while the sum is 47.

The square root of 87873419 is about 9374.0823017509. The cubic root of 87873419 is about 444.5826478789.

The spelling of 87873419 in words is "eighty-seven million, eight hundred seventy-three thousand, four hundred nineteen".