87903841 has 2 divisors, whose sum is σ = 87903842. Its totient is φ = 87903840.

The previous prime is 87903833. The next prime is 87903847. The reversal of 87903841 is 14830978.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 82428241 + 5475600 = 9079^2 + 2340^2 .

It is a cyclic number.

It is not a de Polignac number, because 87903841 - 2³ = 87903833 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 87903794 and 87903803.

It is not a weakly prime, because it can be changed into another prime (87903847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43951920 + 43951921.

It is an arithmetic number, because the mean of its divisors is an integer number (43951921).

Almost surely, 2^87903841 is an apocalyptic number.

It is an amenable number.

87903841 is a deficient number, since it is larger than the sum of its proper divisors (1).

87903841 is an equidigital number, since it uses as much as digits as its factorization.

87903841 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 87903841 is about 9375.7048268384. The cubic root of 87903841 is about 444.6339471719.

The spelling of 87903841 in words is "eighty-seven million, nine hundred three thousand, eight hundred forty-one".