87953389 has 4 divisors (see below), whose sum is σ = 88480224. Its totient is φ = 87426556.

The previous prime is 87953387. The next prime is 87953401. The reversal of 87953389 is 98335978.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 87953389 - 2¹ = 87953387 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87953387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 263167 + ... + 263500.

It is an arithmetic number, because the mean of its divisors is an integer number (22120056).

Almost surely, 2^87953389 is an apocalyptic number.

It is an amenable number.

87953389 is a deficient number, since it is larger than the sum of its proper divisors (526835).

87953389 is a wasteful number, since it uses less digits than its factorization.

87953389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 526834.

The product of its digits is 1632960, while the sum is 52.

The square root of 87953389 is about 9378.3468159372. The cubic root of 87953389 is about 444.7174724748.

The spelling of 87953389 in words is "eighty-seven million, nine hundred fifty-three thousand, three hundred eighty-nine".