87211293 has 8 divisors (see below), whose sum is σ = 125226528. Its totient is φ = 53668464.

The previous prime is 87211291. The next prime is 87211297. The reversal of 87211293 is 39211278.

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

It is not a de Polignac number, because 87211293 - 2¹ = 87211291 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87211291) 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, 1118055 + ... + 1118132.

It is an arithmetic number, because the mean of its divisors is an integer number (15653316).

Almost surely, 2^87211293 is an apocalyptic number.

It is an amenable number.

87211293 is a deficient number, since it is larger than the sum of its proper divisors (38015235).

87211293 is a wasteful number, since it uses less digits than its factorization.

87211293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2236203.

The product of its digits is 6048, while the sum is 33.

The square root of 87211293 is about 9338.6986780814. The cubic root of 87211293 is about 443.4631883854.

The spelling of 87211293 in words is "eighty-seven million, two hundred eleven thousand, two hundred ninety-three".