87449903 has 2 divisors, whose sum is σ = 87449904. Its totient is φ = 87449902.

The previous prime is 87449897. The next prime is 87449927. The reversal of 87449903 is 30994478.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87449903 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87449963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43724951 + 43724952.

It is an arithmetic number, because the mean of its divisors is an integer number (43724952).

Almost surely, 2^87449903 is an apocalyptic number.

87449903 is a deficient number, since it is larger than the sum of its proper divisors (1).

87449903 is an equidigital number, since it uses as much as digits as its factorization.

87449903 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 217728, while the sum is 44.

The square root of 87449903 is about 9351.4652862533. The cubic root of 87449903 is about 443.8672583598.

The spelling of 87449903 in words is "eighty-seven million, four hundred forty-nine thousand, nine hundred three".