87499417 has 2 divisors, whose sum is σ = 87499418. Its totient is φ = 87499416.

The previous prime is 87499411. The next prime is 87499439. The reversal of 87499417 is 71499478.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 58079641 + 29419776 = 7621^2 + 5424^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87499417 is a prime.

It is a super-2 number, since 2×87499417² = 15312295950679778, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (87499411) 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, 43749708 + 43749709.

It is an arithmetic number, because the mean of its divisors is an integer number (43749709).

Almost surely, 2^87499417 is an apocalyptic number.

It is an amenable number.

87499417 is a deficient number, since it is larger than the sum of its proper divisors (1).

87499417 is an equidigital number, since it uses as much as digits as its factorization.

87499417 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 508032, while the sum is 49.

The square root of 87499417 is about 9354.1123042221. The cubic root of 87499417 is about 443.9510148729.

The spelling of 87499417 in words is "eighty-seven million, four hundred ninety-nine thousand, four hundred seventeen".