87140441 has 4 divisors (see below), whose sum is σ = 91726800. Its totient is φ = 82554084.

The previous prime is 87140413. The next prime is 87140467. The reversal of 87140441 is 14404178.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 87140441 - 2¹⁰ = 87139417 is a prime.

It is a super-3 number, since 3×87140441³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87140341) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2293151 + ... + 2293188.

It is an arithmetic number, because the mean of its divisors is an integer number (22931700).

Almost surely, 2^87140441 is an apocalyptic number.

It is an amenable number.

87140441 is a deficient number, since it is larger than the sum of its proper divisors (4586359).

87140441 is a wasteful number, since it uses less digits than its factorization.

87140441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4586358.

The product of its (nonzero) digits is 3584, while the sum is 29.

The square root of 87140441 is about 9334.9044451456. The cubic root of 87140441 is about 443.3430633979.

The spelling of 87140441 in words is "eighty-seven million, one hundred forty thousand, four hundred forty-one".