5198978 has 4 divisors (see below), whose sum is σ = 7798470. Its totient is φ = 2599488.

The previous prime is 5198959. The next prime is 5198983. The reversal of 5198978 is 8798915.

It is a happy number.

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., 3411409 + 1787569 = 1847^2 + 1337^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1299743 + ... + 1299746.

Almost surely, 2^5198978 is an apocalyptic number.

5198978 is a deficient number, since it is larger than the sum of its proper divisors (2599492).

5198978 is a wasteful number, since it uses less digits than its factorization.

5198978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2599491.

The product of its digits is 181440, while the sum is 47.

The square root of 5198978 is about 2280.1267508628. The cubic root of 5198978 is about 173.2364703711.

The spelling of 5198978 in words is "five million, one hundred ninety-eight thousand, nine hundred seventy-eight".