39621898390 has 8 divisors (see below), whose sum is σ = 71319417120. Its totient is φ = 15848759352.

The previous prime is 39621898361. The next prime is 39621898391. The reversal of 39621898390 is 9389812693.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (39621898391) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1981094910 + ... + 1981094929.

It is an arithmetic number, because the mean of its divisors is an integer number (8914927140).

Almost surely, 2^39621898390 is an apocalyptic number.

39621898390 is a deficient number, since it is larger than the sum of its proper divisors (31697518730).

39621898390 is a wasteful number, since it uses less digits than its factorization.

39621898390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3962189846.

The product of its (nonzero) digits is 5038848, while the sum is 58.

The spelling of 39621898390 in words is "thirty-nine billion, six hundred twenty-one million, eight hundred ninety-eight thousand, three hundred ninety".