87743391 has 8 divisors (see below), whose sum is σ = 120153264. Its totient is φ = 56914560.

The previous prime is 87743377. The next prime is 87743419. The reversal of 87743391 is 19334778.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 87743391 - 2¹³ = 87735199 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87743371) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 395130 + ... + 395351.

It is an arithmetic number, because the mean of its divisors is an integer number (15019158).

Almost surely, 2^87743391 is an apocalyptic number.

87743391 is a deficient number, since it is larger than the sum of its proper divisors (32409873).

87743391 is a wasteful number, since it uses less digits than its factorization.

87743391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 790521.

The product of its digits is 127008, while the sum is 42.

The square root of 87743391 is about 9367.1442286323. The cubic root of 87743391 is about 444.3632537779.

The spelling of 87743391 in words is "eighty-seven million, seven hundred forty-three thousand, three hundred ninety-one".