39549956990 has 8 divisors (see below), whose sum is σ = 71189922600. Its totient is φ = 15819982792.

The previous prime is 39549956989. The next prime is 39549957017. The reversal of 39549956990 is 9965994593.

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

It is a self number, because there is not a number n which added to its sum of digits gives 39549956990.

It is a congruent number.

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, 1977497840 + ... + 1977497859.

It is an arithmetic number, because the mean of its divisors is an integer number (8898740325).

Almost surely, 2^39549956990 is an apocalyptic number.

39549956990 is a deficient number, since it is larger than the sum of its proper divisors (31639965610).

39549956990 is a wasteful number, since it uses less digits than its factorization.

39549956990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3954995706.

The product of its (nonzero) digits is 106288200, while the sum is 68.

The spelling of 39549956990 in words is "thirty-nine billion, five hundred forty-nine million, nine hundred fifty-six thousand, nine hundred ninety".