549978914 has 4 divisors (see below), whose sum is σ = 824968374. Its totient is φ = 274989456.

The previous prime is 549978907. The next prime is 549978941. The reversal of 549978914 is 419879945.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 419879945 = 5 ⋅83975989.

It can be written as a sum of positive squares in only one way, i.e., 549199225 + 779689 = 23435^2 + 883^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 549978914.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 137494727 + ... + 137494730.

Almost surely, 2^549978914 is an apocalyptic number.

549978914 is a deficient number, since it is larger than the sum of its proper divisors (274989460).

549978914 is a wasteful number, since it uses less digits than its factorization.

549978914 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274989459.

The product of its digits is 3265920, while the sum is 56.

The square root of 549978914 is about 23451.6292397778. The cubic root of 549978914 is about 819.3108000376.

The spelling of 549978914 in words is "five hundred forty-nine million, nine hundred seventy-eight thousand, nine hundred fourteen".