87037919 has 2 divisors, whose sum is σ = 87037920. Its totient is φ = 87037918.

The previous prime is 87037913. The next prime is 87037931. The reversal of 87037919 is 91973078.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87037919 is a prime.

It is a super-2 number, since 2×87037919² = 15151198687701122, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 87037919.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87037913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43518959 + 43518960.

It is an arithmetic number, because the mean of its divisors is an integer number (43518960).

Almost surely, 2^87037919 is an apocalyptic number.

87037919 is a deficient number, since it is larger than the sum of its proper divisors (1).

87037919 is an equidigital number, since it uses as much as digits as its factorization.

87037919 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 87037919 is about 9329.4115034122. The cubic root of 87037919 is about 443.1691286406.

The spelling of 87037919 in words is "eighty-seven million, thirty-seven thousand, nine hundred nineteen".