5809978 has 4 divisors (see below), whose sum is σ = 8714970. Its totient is φ = 2904988.

The previous prime is 5809949. The next prime is 5810011. The reversal of 5809978 is 8799085.

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

It can be written as a sum of positive squares in only one way, i.e., 4214809 + 1595169 = 2053^2 + 1263^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1452493 + ... + 1452496.

Almost surely, 2^5809978 is an apocalyptic number.

5809978 is a deficient number, since it is larger than the sum of its proper divisors (2904992).

5809978 is a wasteful number, since it uses less digits than its factorization.

5809978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2904991.

The product of its (nonzero) digits is 181440, while the sum is 46.

The square root of 5809978 is about 2410.3895950655. The cubic root of 5809978 is about 179.7731504412.

The spelling of 5809978 in words is "five million, eight hundred nine thousand, nine hundred seventy-eight".