87443399 has 2 divisors, whose sum is σ = 87443400. Its totient is φ = 87443398.

The previous prime is 87443383. The next prime is 87443407. The reversal of 87443399 is 99334478.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87443399 - 2⁴ = 87443383 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87443329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43721699 + 43721700.

It is an arithmetic number, because the mean of its divisors is an integer number (43721700).

Almost surely, 2^87443399 is an apocalyptic number.

87443399 is a deficient number, since it is larger than the sum of its proper divisors (1).

87443399 is an equidigital number, since it uses as much as digits as its factorization.

87443399 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 653184, while the sum is 47.

The square root of 87443399 is about 9351.1175267986. The cubic root of 87443399 is about 443.8562540243.

The spelling of 87443399 in words is "eighty-seven million, four hundred forty-three thousand, three hundred ninety-nine".