87422499 has 12 divisors (see below), whose sum is σ = 126412000. Its totient is φ = 58219344.

The previous prime is 87422479. The next prime is 87422519. The reversal of 87422499 is 99422478.

It is a Cunningham number, because it is equal to 9350²-1.

It is an interprime number because it is at equal distance from previous prime (87422479) and next prime (87422519).

It is not a de Polignac number, because 87422499 - 2⁹ = 87421987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87422429) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4677 + ... + 14025.

Almost surely, 2^87422499 is an apocalyptic number.

87422499 is a deficient number, since it is larger than the sum of its proper divisors (38989501).

87422499 is a wasteful number, since it uses less digits than its factorization.

87422499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10394 (or 10391 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 87422499 is about 9349.9999465241. Note that the first 4 decimals coincide. The cubic root of 87422499 is about 443.8208889196.

The spelling of 87422499 in words is "eighty-seven million, four hundred twenty-two thousand, four hundred ninety-nine".