87343973 has 2 divisors, whose sum is σ = 87343974. Its totient is φ = 87343972.

The previous prime is 87343951. The next prime is 87344017. The reversal of 87343973 is 37934378.

It is an a-pointer prime, because the next prime (87344017) can be obtained adding 87343973 to its sum of digits (44).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 83210884 + 4133089 = 9122^2 + 2033^2 .

It is a cyclic number.

It is not a de Polignac number, because 87343973 - 2²⁶ = 20235109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87343913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43671986 + 43671987.

It is an arithmetic number, because the mean of its divisors is an integer number (43671987).

Almost surely, 2^87343973 is an apocalyptic number.

It is an amenable number.

87343973 is a deficient number, since it is larger than the sum of its proper divisors (1).

87343973 is an equidigital number, since it uses as much as digits as its factorization.

87343973 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 381024, while the sum is 44.

The square root of 87343973 is about 9345.7997517601. The cubic root of 87343973 is about 443.6879638729.

The spelling of 87343973 in words is "eighty-seven million, three hundred forty-three thousand, nine hundred seventy-three".