39981259790 has 16 divisors (see below), whose sum is σ = 71971418160. Its totient is φ = 15991359360.

The previous prime is 39981259771. The next prime is 39981259831. The reversal of 39981259790 is 9795218993.

It is a super-2 number, since 2×39981259790² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11606 + ... + 283014.

It is an arithmetic number, because the mean of its divisors is an integer number (4498213635).

Almost surely, 2^39981259790 is an apocalyptic number.

39981259790 is a deficient number, since it is larger than the sum of its proper divisors (31990158370).

39981259790 is a wasteful number, since it uses less digits than its factorization.

39981259790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286147.

The product of its (nonzero) digits is 11022480, while the sum is 62.

The spelling of 39981259790 in words is "thirty-nine billion, nine hundred eighty-one million, two hundred fifty-nine thousand, seven hundred ninety".