87389293 has 2 divisors, whose sum is σ = 87389294. Its totient is φ = 87389292.

The previous prime is 87389273. The next prime is 87389297. The reversal of 87389293 is 39298378.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 74701449 + 12687844 = 8643^2 + 3562^2 .

It is a cyclic number.

It is not a de Polignac number, because 87389293 - 2⁵ = 87389261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87389297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43694646 + 43694647.

It is an arithmetic number, because the mean of its divisors is an integer number (43694647).

Almost surely, 2^87389293 is an apocalyptic number.

It is an amenable number.

87389293 is a deficient number, since it is larger than the sum of its proper divisors (1).

87389293 is an equidigital number, since it uses as much as digits as its factorization.

87389293 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 653184, while the sum is 49.

The square root of 87389293 is about 9348.2240559370. The cubic root of 87389293 is about 443.7646891124.

The spelling of 87389293 in words is "eighty-seven million, three hundred eighty-nine thousand, two hundred ninety-three".