87472869 has 16 divisors (see below), whose sum is σ = 129392640. Its totient is φ = 52114160.

The previous prime is 87472867. The next prime is 87472873. The reversal of 87472869 is 96827478.

It is a cyclic number.

It is not a de Polignac number, because 87472869 - 2¹ = 87472867 is a prime.

It is a super-2 number, since 2×87472869² = 15303005622182322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87472867) 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, 20517 + ... + 24410.

It is an arithmetic number, because the mean of its divisors is an integer number (8087040).

Almost surely, 2^87472869 is an apocalyptic number.

It is an amenable number.

87472869 is a deficient number, since it is larger than the sum of its proper divisors (41919771).

87472869 is a wasteful number, since it uses less digits than its factorization.

87472869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45000.

The product of its digits is 1354752, while the sum is 51.

The square root of 87472869 is about 9352.6931415502. The cubic root of 87472869 is about 443.9061109404.

The spelling of 87472869 in words is "eighty-seven million, four hundred seventy-two thousand, eight hundred sixty-nine".