8939961 has 12 divisors (see below), whose sum is σ = 13059540. Its totient is φ = 5892480.

The previous prime is 8939951. The next prime is 8939963. The reversal of 8939961 is 1699398.

It can be written as a sum of positive squares in 2 ways, for example, as 783225 + 8156736 = 885^2 + 2856^2 .

It is not a de Polignac number, because 8939961 - 2⁵ = 8939929 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8939963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4780 + ... + 6381.

It is an arithmetic number, because the mean of its divisors is an integer number (1088295).

Almost surely, 2^8939961 is an apocalyptic number.

It is an amenable number.

8939961 is a deficient number, since it is larger than the sum of its proper divisors (4119579).

8939961 is a wasteful number, since it uses less digits than its factorization.

8939961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11256 (or 11253 counting only the distinct ones).

The product of its digits is 104976, while the sum is 45.

The square root of 8939961 is about 2989.9767557625. The cubic root of 8939961 is about 207.5448086325.

The spelling of 8939961 in words is "eight million, nine hundred thirty-nine thousand, nine hundred sixty-one".