87744319 has 4 divisors (see below), whose sum is σ = 94493896. Its totient is φ = 80994744.

The previous prime is 87744313. The next prime is 87744323. The reversal of 87744319 is 91344778.

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 87744319 - 2¹¹ = 87742271 is a prime.

It is a super-2 number, since 2×87744319² = 15398131033547522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87744313) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3374769 + ... + 3374794.

It is an arithmetic number, because the mean of its divisors is an integer number (23623474).

Almost surely, 2^87744319 is an apocalyptic number.

87744319 is a deficient number, since it is larger than the sum of its proper divisors (6749577).

87744319 is a wasteful number, since it uses less digits than its factorization.

87744319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6749576.

The product of its digits is 169344, while the sum is 43.

The square root of 87744319 is about 9367.1937633424. The cubic root of 87744319 is about 444.3648203447.

The spelling of 87744319 in words is "eighty-seven million, seven hundred forty-four thousand, three hundred nineteen".