39424978 has 8 divisors (see below), whose sum is σ = 61176780. Its totient is φ = 19032720.

The previous prime is 39424969. The next prime is 39425003. The reversal of 39424978 is 87942493.

It is a happy number.

39424978 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 39225169 + 199809 = 6263^2 + 447^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 339813 + ... + 339928.

Almost surely, 2^39424978 is an apocalyptic number.

39424978 is a deficient number, since it is larger than the sum of its proper divisors (21751802).

39424978 is a wasteful number, since it uses less digits than its factorization.

39424978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 679772.

The product of its digits is 435456, while the sum is 46.

The square root of 39424978 is about 6278.9312784900. The cubic root of 39424978 is about 340.3484835297.

The spelling of 39424978 in words is "thirty-nine million, four hundred twenty-four thousand, nine hundred seventy-eight".