39504398642 has 8 divisors (see below), whose sum is σ = 59268229932. Its totient is φ = 19748322000.

The previous prime is 39504398623. The next prime is 39504398677. The reversal of 39504398642 is 24689340593.

It can be written as a sum of positive squares in 2 ways, for example, as 26843873281 + 12660525361 = 163841^2 + 112519^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1925909 + ... + 1946312.

Almost surely, 2^39504398642 is an apocalyptic number.

39504398642 is a deficient number, since it is larger than the sum of its proper divisors (19763831290).

39504398642 is a wasteful number, since it uses less digits than its factorization.

39504398642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3877324.

The product of its (nonzero) digits is 5598720, while the sum is 53.

The spelling of 39504398642 in words is "thirty-nine billion, five hundred four million, three hundred ninety-eight thousand, six hundred forty-two".