106927921 has 4 divisors (see below), whose sum is σ = 106950244. Its totient is φ = 106905600.

The previous prime is 106927903. The next prime is 106927927. The reversal of 106927921 is 129729601.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 82810000 + 24117921 = 9100^2 + 4911^2 .

It is a cyclic number.

It is not a de Polignac number, because 106927921 - 2¹⁵ = 106895153 is a prime.

It is a super-2 number, since 2×106927921² = 22867160578764482, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (106927927) 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, 720 + ... + 14641.

It is an arithmetic number, because the mean of its divisors is an integer number (26737561).

Almost surely, 2^106927921 is an apocalyptic number.

It is an amenable number.

106927921 is a deficient number, since it is larger than the sum of its proper divisors (22323).

106927921 is an equidigital number, since it uses as much as digits as its factorization.

106927921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22322.

The product of its (nonzero) digits is 13608, while the sum is 37.

The square root of 106927921 is about 10340.5957758729. The cubic root of 106927921 is about 474.6393139980.

The spelling of 106927921 in words is "one hundred six million, nine hundred twenty-seven thousand, nine hundred twenty-one".