87773399 has 4 divisors (see below), whose sum is σ = 100312464. Its totient is φ = 75234336.

The previous prime is 87773351. The next prime is 87773419. The reversal of 87773399 is 99337778.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99337778 = 2 ⋅49668889.

It is a cyclic number.

It is not a de Polignac number, because 87773399 - 2⁸ = 87773143 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 87773399.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87773339) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6269522 + ... + 6269535.

It is an arithmetic number, because the mean of its divisors is an integer number (25078116).

Almost surely, 2^87773399 is an apocalyptic number.

87773399 is a deficient number, since it is larger than the sum of its proper divisors (12539065).

87773399 is a wasteful number, since it uses less digits than its factorization.

87773399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12539064.

The product of its digits is 2000376, while the sum is 53.

The square root of 87773399 is about 9368.7458605728. The cubic root of 87773399 is about 444.4139050104.

The spelling of 87773399 in words is "eighty-seven million, seven hundred seventy-three thousand, three hundred ninety-nine".