787394 has 4 divisors (see below), whose sum is σ = 1181094. Its totient is φ = 393696.

The previous prime is 787361. The next prime is 787427. The reversal of 787394 is 493787.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (787361) and next prime (787427).

It can be written as a sum of positive squares in only one way, i.e., 786769 + 625 = 887^2 + 25^2 .

It is a super-2 number, since 2×787394² = 1239978622472, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 196847 + ... + 196850.

2⁷⁸⁷³⁹⁴ is an apocalyptic number.

787394 is a deficient number, since it is larger than the sum of its proper divisors (393700).

787394 is a wasteful number, since it uses less digits than its factorization.

787394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393699.

The product of its digits is 42336, while the sum is 38.

The square root of 787394 is about 887.3522412210. The cubic root of 787394 is about 92.3415939933.

It can be divided in two parts, 787 and 394, that multiplied together give a triangular number (310078 = T₇₈₇).

The spelling of 787394 in words is "seven hundred eighty-seven thousand, three hundred ninety-four".