87162919 has 2 divisors, whose sum is σ = 87162920. Its totient is φ = 87162918.

The previous prime is 87162857. The next prime is 87162923. The reversal of 87162919 is 91926178.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87162919 is a prime.

It is a super-2 number, since 2×87162919² = 15194748897201122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87162989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43581459 + 43581460.

It is an arithmetic number, because the mean of its divisors is an integer number (43581460).

Almost surely, 2^87162919 is an apocalyptic number.

87162919 is a deficient number, since it is larger than the sum of its proper divisors (1).

87162919 is an equidigital number, since it uses as much as digits as its factorization.

87162919 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54432, while the sum is 43.

The square root of 87162919 is about 9336.1083434159. The cubic root of 87162919 is about 443.3811804440.

The spelling of 87162919 in words is "eighty-seven million, one hundred sixty-two thousand, nine hundred nineteen".