87450909399 has 48 divisors (see below), whose sum is σ = 147850411072. Its totient is φ = 48779034624.

The previous prime is 87450909391. The next prime is 87450909407. The reversal of 87450909399 is 99390905478.

It is a happy number.

87450909399 is a `hidden beast` number, since 8 + 7 + 450 + 9 + 0 + 93 + 99 = 666.

It is an interprime number because it is at equal distance from previous prime (87450909391) and next prime (87450909407).

It is not a de Polignac number, because 87450909399 - 2³ = 87450909391 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87450909391) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 348087 + ... + 544119.

Almost surely, 2^87450909399 is an apocalyptic number.

87450909399 is a deficient number, since it is larger than the sum of its proper divisors (60399501673).

87450909399 is a wasteful number, since it uses less digits than its factorization.

87450909399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196216 (or 196213 counting only the distinct ones).

The product of its (nonzero) digits is 22044960, while the sum is 63.

The spelling of 87450909399 in words is "eighty-seven billion, four hundred fifty million, nine hundred nine thousand, three hundred ninety-nine".