1086921 has 12 divisors (see below), whose sum is σ = 1712880. Its totient is φ = 658680.

The previous prime is 1086919. The next prime is 1086923. The reversal of 1086921 is 1296801.

It is an interprime number because it is at equal distance from previous prime (1086919) and next prime (1086923).

It is not a de Polignac number, because 1086921 - 2¹ = 1086919 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1086923) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5391 + ... + 5588.

It is an arithmetic number, because the mean of its divisors is an integer number (142740).

2^1086921 is an apocalyptic number.

1086921 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1086921 is a deficient number, since it is larger than the sum of its proper divisors (625959).

1086921 is a wasteful number, since it uses less digits than its factorization.

1086921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10996 (or 10993 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 1086921 is about 1042.5550345186. Note that the first 3 decimals coincide. The cubic root of 1086921 is about 102.8172522232.

The spelling of 1086921 in words is "one million, eighty-six thousand, nine hundred twenty-one".