10109961 has 8 divisors (see below), whose sum is σ = 14977760. Its totient is φ = 6739956.

The previous prime is 10109941. The next prime is 10109963. The reversal of 10109961 is 16990101.

It is not a de Polignac number, because 10109961 - 2⁵ = 10109929 is a prime.

It is a super-2 number, since 2×10109961² = 204422622843042, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 374443 = 10109961 / (1 + 0 + 1 + 0 + 9 + 9 + 6 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10109963) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 187195 + ... + 187248.

It is an arithmetic number, because the mean of its divisors is an integer number (1872220).

Almost surely, 2^10109961 is an apocalyptic number.

It is an amenable number.

10109961 is a deficient number, since it is larger than the sum of its proper divisors (4867799).

10109961 is an equidigital number, since it uses as much as digits as its factorization.

10109961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374452 (or 374446 counting only the distinct ones).

The product of its (nonzero) digits is 486, while the sum is 27.

The square root of 10109961 is about 3179.6164863077. The cubic root of 10109961 is about 216.2302714023.

The spelling of 10109961 in words is "ten million, one hundred nine thousand, nine hundred sixty-one".