8890347981 has 8 divisors (see below), whose sum is σ = 11869135200. Its totient is φ = 5919229712.

The previous prime is 8890347979. The next prime is 8890348003. The reversal of 8890347981 is 1897430988.

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

It is a cyclic number.

It is not a de Polignac number, because 8890347981 - 2¹ = 8890347979 is a prime.

It is a super-2 number, since 2×8890347981² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8890347971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1914531 + ... + 1919168.

It is an arithmetic number, because the mean of its divisors is an integer number (1483641900).

Almost surely, 2^8890347981 is an apocalyptic number.

It is an amenable number.

8890347981 is a deficient number, since it is larger than the sum of its proper divisors (2978787219).

8890347981 is a wasteful number, since it uses less digits than its factorization.

8890347981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3834475.

The product of its (nonzero) digits is 3483648, while the sum is 57.

The square root of 8890347981 is about 94288.6418451342. The cubic root of 8890347981 is about 2071.6016745624.

The spelling of 8890347981 in words is "eight billion, eight hundred ninety million, three hundred forty-seven thousand, nine hundred eighty-one".