87190379 has 2 divisors, whose sum is σ = 87190380. Its totient is φ = 87190378.

The previous prime is 87190339. The next prime is 87190381. The reversal of 87190379 is 97309178.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87190379 - 2¹² = 87186283 is a prime.

Together with 87190381, 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 (87190339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43595189 + 43595190.

It is an arithmetic number, because the mean of its divisors is an integer number (43595190).

Almost surely, 2^87190379 is an apocalyptic number.

87190379 is a deficient number, since it is larger than the sum of its proper divisors (1).

87190379 is an equidigital number, since it uses as much as digits as its factorization.

87190379 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 95256, while the sum is 44.

The square root of 87190379 is about 9337.5788617821. The cubic root of 87190379 is about 443.4277368199.

The spelling of 87190379 in words is "eighty-seven million, one hundred ninety thousand, three hundred seventy-nine".