5119978 has 4 divisors (see below), whose sum is σ = 7679970. Its totient is φ = 2559988.

The previous prime is 5119973. The next prime is 5119997. The reversal of 5119978 is 8799115.

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., 4297329 + 822649 = 2073^2 + 907^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 5119978.

It is not an unprimeable number, because it can be changed into a prime (5119973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1279993 + ... + 1279996.

Almost surely, 2^5119978 is an apocalyptic number.

5119978 is a deficient number, since it is larger than the sum of its proper divisors (2559992).

5119978 is a wasteful number, since it uses less digits than its factorization.

5119978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2559991.

The product of its digits is 22680, while the sum is 40.

The square root of 5119978 is about 2262.7368384326. The cubic root of 5119978 is about 172.3545283399.

It can be divided in two parts, 51 and 19978, that multiplied together give a triangular number (1018878 = T₁₄₂₇).

The spelling of 5119978 in words is "five million, one hundred nineteen thousand, nine hundred seventy-eight".