87922471 has 16 divisors (see below), whose sum is σ = 111141184. Its totient is φ = 67682304.

The previous prime is 87922463. The next prime is 87922507. The reversal of 87922471 is 17422978.

It is a 14-Lehmer number, since φ(87922471) divides (87922471-1)¹⁴.

It is a cyclic number.

It is not a de Polignac number, because 87922471 - 2³ = 87922463 is a prime.

It is a super-3 number, since 3×87922471³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87922451) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9690 + ... + 16423.

It is an arithmetic number, because the mean of its divisors is an integer number (6946324).

Almost surely, 2^87922471 is an apocalyptic number.

87922471 is a deficient number, since it is larger than the sum of its proper divisors (23218713).

87922471 is a wasteful number, since it uses less digits than its factorization.

87922471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26170.

The product of its digits is 56448, while the sum is 40.

The square root of 87922471 is about 9376.6982995082. The cubic root of 87922471 is about 444.6653562860.

The spelling of 87922471 in words is "eighty-seven million, nine hundred twenty-two thousand, four hundred seventy-one".