87440359 has 4 divisors (see below), whose sum is σ = 88341904. Its totient is φ = 86538816.

The previous prime is 87440357. The next prime is 87440383. The reversal of 87440359 is 95304478.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 87440359 - 2¹ = 87440357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87440357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 450627 + ... + 450820.

It is an arithmetic number, because the mean of its divisors is an integer number (22085476).

Almost surely, 2^87440359 is an apocalyptic number.

87440359 is a deficient number, since it is larger than the sum of its proper divisors (901545).

87440359 is an equidigital number, since it uses as much as digits as its factorization.

87440359 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 901544.

The product of its (nonzero) digits is 120960, while the sum is 40.

The square root of 87440359 is about 9350.9549779688. The cubic root of 87440359 is about 443.8511103593.

The spelling of 87440359 in words is "eighty-seven million, four hundred forty thousand, three hundred fifty-nine".