787399 has 4 divisors (see below), whose sum is σ = 789264. Its totient is φ = 785536.

The previous prime is 787361. The next prime is 787427. The reversal of 787399 is 993787.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 993787 = 71 ⋅13997.

It is a cyclic number.

It is not a de Polignac number, because 787399 - 2⁹ = 786887 is a prime.

It is a Duffinian number.

787399 is a lucky number.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (787309) 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, 39 + ... + 1255.

It is an arithmetic number, because the mean of its divisors is an integer number (197316).

2⁷⁸⁷³⁹⁹ is an apocalyptic number.

787399 is a deficient number, since it is larger than the sum of its proper divisors (1865).

787399 is a wasteful number, since it uses less digits than its factorization.

787399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1864.

The product of its digits is 95256, while the sum is 43.

The square root of 787399 is about 887.3550585870. The cubic root of 787399 is about 92.3417894512.

The spelling of 787399 in words is "seven hundred eighty-seven thousand, three hundred ninety-nine".