779487 has 4 divisors (see below), whose sum is σ = 1039320. Its totient is φ = 519656.

The previous prime is 779477. The next prime is 779489. The reversal of 779487 is 784977.

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

It is a cyclic number.

It is not a de Polignac number, because 779487 - 2⁸ = 779231 is a prime.

It is a D-number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (779489) 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, 129912 + ... + 129917.

It is an arithmetic number, because the mean of its divisors is an integer number (259830).

2⁷⁷⁹⁴⁸⁷ is an apocalyptic number.

779487 is a deficient number, since it is larger than the sum of its proper divisors (259833).

779487 is a wasteful number, since it uses less digits than its factorization.

779487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259832.

The product of its digits is 98784, while the sum is 42.

The square root of 779487 is about 882.8856098046. The cubic root of 779487 is about 92.0314558473.

The spelling of 779487 in words is "seven hundred seventy-nine thousand, four hundred eighty-seven".