86870419 has 2 divisors, whose sum is σ = 86870420. Its totient is φ = 86870418.

The previous prime is 86870389. The next prime is 86870437. The reversal of 86870419 is 91407868.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 86870419 - 2⁹ = 86869907 is a prime.

It is a super-2 number, since 2×86870419² = 15092939394471122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (86870519) 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, 43435209 + 43435210.

It is an arithmetic number, because the mean of its divisors is an integer number (43435210).

Almost surely, 2^86870419 is an apocalyptic number.

86870419 is a deficient number, since it is larger than the sum of its proper divisors (1).

86870419 is an equidigital number, since it uses as much as digits as its factorization.

86870419 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 96768, while the sum is 43.

The square root of 86870419 is about 9320.4301939342. The cubic root of 86870419 is about 442.8846606805.

The spelling of 86870419 in words is "eighty-six million, eight hundred seventy thousand, four hundred nineteen".