4119949978 has 4 divisors (see below), whose sum is σ = 6179924970. Its totient is φ = 2059974988.

The previous prime is 4119949969. The next prime is 4119949993. The reversal of 4119949978 is 8799499114.

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., 2338012609 + 1781937369 = 48353^2 + 42213^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1029987493 + ... + 1029987496.

Almost surely, 2^4119949978 is an apocalyptic number.

4119949978 is a deficient number, since it is larger than the sum of its proper divisors (2059974992).

4119949978 is a wasteful number, since it uses less digits than its factorization.

4119949978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2059974991.

The product of its digits is 5878656, while the sum is 61.

The square root of 4119949978 is about 64186.8364853729. The cubic root of 4119949978 is about 1603.1124282867.

The spelling of 4119949978 in words is "four billion, one hundred nineteen million, nine hundred forty-nine thousand, nine hundred seventy-eight".